Simplify prompt, execution of Go programs, fix typos

docs/addition_of_exercise_draft.md

@@ -13,19 +13,18 @@ Example: [fprime](https://github.com/01-edu/public/blob/master/subjects/fprime.e
 The exceptional cases in the `usage` part.
 
 ```console
-student@ubuntu:~/piscine-go/test$ go build
-student@ubuntu:~/piscine-go/test$ ./test 225225
+$ go run . 225225
 3*3*5*5*7*11*13
-student@ubuntu:~/piscine-go/test$ ./test 8333325
+$ go run . 8333325
 3*3*5*5*7*11*13*37
 
 ...
 
-student@ubuntu:~/piscine-go/test$ ./test 0
+$ go run . 0
 
-student@ubuntu:~/piscine-go/test$ ./test 1
+$ go run . 1
 1
-student@ubuntu:~/piscine-go/test$
+$
 ```
 
 The subject states that only **positive integer** will be tested, however, 0 and 1 are not primes.
@@ -59,24 +58,23 @@ Write a program that takes a positive `int` and displays its prime factors, foll
 ### Usage
 
 ```console
-student@ubuntu:~/piscine-go/test$ go build
-student@ubuntu:~/piscine-go/test$ ./test 225225
+$ go run . 225225
 3*3*5*5*7*11*13
-student@ubuntu:~/piscine-go/test$ ./test 8333325
+$ go run . 8333325
 3*3*5*5*7*11*13*37
-student@ubuntu:~/piscine-go/test$ ./test 9539
+$ go run . 9539
 9539
-student@ubuntu:~/piscine-go/test$ ./test 804577
+$ go run . 804577
 804577
-student@ubuntu:~/piscine-go/test$ ./test 42
+$ go run . 42
 2*3*7
-student@ubuntu:~/piscine-go/test$ ./test a
+$ go run . a
 
-student@ubuntu:~/piscine-go/test$ ./test 0
+$ go run . 0
 
-student@ubuntu:~/piscine-go/test$ ./test 1
+$ go run . 1
 1
-student@ubuntu:~/piscine-go/test$
+$
 ```
 
 ---

subjects/abort/README.md

@@ -33,8 +33,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/abort/test$ go build
-student@ubuntu:~/abort/test$ ./test
+$ go run .
 5
-student@ubuntu:~/abort/test$
+$
 ```

subjects/activebits/README.md

@@ -32,8 +32,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/activebits/test$ go build
-student@ubuntu:~/activebits/test$ ./test
+$ go run .
 3
-student@ubuntu:~/activebits/test$
+$
 ```

subjects/adding/README.md

@@ -26,9 +26,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/adding/test$ cargo run
+$ cargo run
 -5
 2261
 305696
-student@ubuntu:~/adding/test$
+$
 ```

subjects/adding_twice/README.md

@@ -50,10 +50,10 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/adding_twice/test$ cargo run
+$ cargo run
 The value is 27
 The value is 47
 The value is 67
 The value is -57
-student@ubuntu:~/adding_twice/test$
+$
 ```

subjects/addlinkednumbers/README.md

@@ -60,8 +60,7 @@ func main() {
 An its output:
 
 ```console
-student@ubuntu:~/addlinkednumbers/test$ go build
-student@ubuntu:~/addlinkednumbers/test$ ./main
+$ go run .
 9 -> 0 -> 7
-student@ubuntu:~/addlinkednumbers/test$
+$
 ```

subjects/addprimesum/README.md

@@ -9,18 +9,17 @@ Write a program that takes a positive integer as argument and displays the sum o
 ### Usage
 
 ```console
-student@ubuntu:~/addprimesum/test$ go build
-student@ubuntu:~/addprimesum/test$ ./test 5
+$ go run . 5
 10
-student@ubuntu:~/addprimesum/test$ ./test 7
+$ go run . 7
 17
-student@ubuntu:~/addprimesum/test$ ./test -2
+$ go run . -2
 0
-student@ubuntu:~/addprimesum/test$ ./test 0
+$ go run . 0
 0
-student@ubuntu:~/addprimesum/test$ ./test
+$ go run .
 0
-student@ubuntu:~/addprimesum/test$ ./test 5 7
+$ go run . 5 7
 0
-student@ubuntu:~/addprimesum/test$
+$
 ```

subjects/advancedsortwordarr/README.md

@@ -36,8 +36,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/advancedsortwordarr/test$ go build
-student@ubuntu:~/advancedsortwordarr/test$ ./test
+$ go run .
 [1 2 3 A B C a b c]
-student@ubuntu:~/advancedsortwordarr/test$
+$
 ```

subjects/alphacount/README.md

@@ -37,8 +37,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/alphacount/test$ go build
-student@ubuntu:~/alphacount/test$ ./test
+$ go run .
 10
-student@ubuntu:~/alphacount/test$
+$
 ```

subjects/alphamirror/README.md

@@ -16,11 +16,10 @@ If the number of arguments is different from 1, the program displays nothing.
 ### Usage
 
 ```console
-student@ubuntu:~/alphamirror$ go build
-student@ubuntu:~/alphamirror$ ./alphamirror "abc"
+$ go run . "abc"
 zyx
-student@ubuntu:~/alphamirror$ ./alphamirror "My horse is Amazing." | cat -e
+$ go run . "My horse is Amazing." | cat -e
 Nb slihv rh Znzarmt.$
-student@ubuntu:~/alphamirror$ ./alphamirror
-student@ubuntu:~/alphamirror$
+$ go run .
+$
 ```

subjects/any/README.md

@@ -41,9 +41,8 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/any/test$ go build
-student@ubuntu:~/any/test$ ./test
+$ go run .
 false
 true
-student@ubuntu:~/any/test$
+$
 ```

subjects/appendrange/README.md

@@ -39,9 +39,8 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/appendrange/test$ go build
-student@ubuntu:~/appendrange/test$ ./test
+$ go run .
 [5 6 7 8 9]
 []
-student@ubuntu:~/appendrange/test$
+$
 ```

subjects/arrange_it/README.md

@@ -35,7 +35,7 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/arrange_it/test$ cargo run
+$ cargo run
 "This is a Test"
-student@ubuntu:~/arrange_it/test$
+$
 ```

subjects/arrays/README.md

@@ -54,10 +54,10 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/arrays/test$ cargo run
+$ cargo run
 The Sum of the elements in [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] = 55
 The Sum of the elements in [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] = 55
 The Sum of the elements in [5, 5, 5, 5, 5, 5, 5, 5, 5, 5] = 50
 Array size 32 with only 10's in it [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10]
-student@ubuntu:~/arrays/test$
+$
 ```

subjects/ascii-art/README.md

@@ -68,8 +68,7 @@ etc
 ### Usage
 
 ```console
-student@ubuntu:~/ascii-art$ go build
-student@ubuntu:~/ascii-art$ ./ascii-art "hello"
+$ go run . "hello"
   _              _   _
  | |            | | | |
  | |__     ___  | | | |   ___
@@ -78,7 +77,7 @@ student@ubuntu:~/ascii-art$ ./ascii-art "hello"
  |_| |_|  \___| |_| |_|  \___/
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "HeLlO"
+$ go run . "HeLlO"
   _    _          _        _    ____
  | |  | |        | |      | |  / __ \
  | |__| |   ___  | |      | | | |  | |
@@ -87,7 +86,7 @@ student@ubuntu:~/ascii-art$ ./ascii-art "HeLlO"
  |_|  |_|  \___| |______| |_|  \____/
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "Hello There"
+$ go run . "Hello There"
   _    _           _    _                 _______   _
  | |  | |         | |  | |               |__   __| | |
  | |__| |   ___   | |  | |    ___           | |    | |__      ___    _ __     ___
@@ -96,7 +95,7 @@ student@ubuntu:~/ascii-art$ ./ascii-art "Hello There"
  |_|  |_|  \___|  |_|  |_|   \___/          |_|    |_| |_|   \___|  |_|      \___|
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "1Hello 2There"
+$ go run . "1Hello 2There"
      _    _           _    _                       _______   _
  _  | |  | |         | |  | |               ____  |__   __| | |
 / | | |__| |   ___   | |  | |    ___       |___ \    | |    | |__      ___    _ __     ___
@@ -105,7 +104,7 @@ student@ubuntu:~/ascii-art$ ./ascii-art "1Hello 2There"
 |_| |_|  |_|  \___|  |_|  |_|   \___/      |_____|   |_|    |_| |_|   \___|  |_|      \___|
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "{Hello There}"
+$ go run . "{Hello There}"
    __   _    _           _    _                 _______   _                              __
   / /  | |  | |         | |  | |               |__   __| | |                             \ \
  | |   | |__| |   ___   | |  | |    ___           | |    | |__      ___    _ __     ___   | |
@@ -114,5 +113,5 @@ student@ubuntu:~/ascii-art$ ./ascii-art "{Hello There}"
  | |   |_|  |_|  \___|  |_|  |_|   \___/          |_|    |_| |_|   \___|  |_|      \___|  | |
   \_\                                                                                    /_/
 
-student@ubuntu:~/ascii-art$
+$
 ```

subjects/ascii-art/fs/README.md

@@ -26,8 +26,7 @@ This project will help you learn about :
 ### Usage
 
 ```console
-student@ubuntu:~/ascii-art$ go build
-student@ubuntu:~/ascii-art$ ./ascii-art "hello" standard
+$ go run . "hello" standard
   _                _    _
  | |              | |  | |
  | |__      ___   | |  | |    ___
@@ -37,7 +36,7 @@ student@ubuntu:~/ascii-art$ ./ascii-art "hello" standard
 
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "Hello There!" shadow
+$ go run . "Hello There!" shadow
 
 _|    _|          _| _|                _|_|_|_|_| _|                                  _|
 _|    _|   _|_|   _| _|   _|_|             _|     _|_|_|     _|_|   _|  _|_|   _|_|   _|
@@ -47,7 +46,7 @@ _|    _|   _|_|_| _| _|   _|_|             _|     _|    _|   _|_|_| _|         _
 
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "Hello There!" thinkertoy
+$ go run . "Hello There!" thinkertoy
 
 o  o     o o           o-O-o o
 |  |     | |             |   |                o
@@ -57,5 +56,5 @@ o  o o-o o o o-o         o   o  o o-o o   o-o
                                               O
 
 
-student@ubuntu:~/ascii-art$
+$
 ```

subjects/ascii-art/justify/README.md

@@ -32,8 +32,7 @@ This project will help you learn about :
 ### Usage
 
 ```console
-|student@ubuntu:~/ascii-art$ go build                                                                                       |
-|student@ubuntu:~/ascii-art$ ./ascii-art "hello" standard --align=center                                                    |
+|$ go run . "hello" standard --align=center                                                                                 |
 |                                             _                _    _                                                       |
 |                                            | |              | |  | |                                                      |
 |                                            | |__      ___   | |  | |    ___                                               |
@@ -42,7 +41,7 @@ This project will help you learn about :
 |                                            |_| |_|   \___|  |_|  |_|   \___/                                              |
 |                                                                                                                           |
 |                                                                                                                           |
-|student@ubuntu:~/ascii-art$ ./ascii-art "Hello There" standard --align=left                                                |
+|$ go run . "Hello There" standard --align=left                                                                             |
 | _    _           _    _                 _______   _                                                                       |
 || |  | |         | |  | |               |__   __| | |                                                                      |
 || |__| |   ___   | |  | |    ___           | |    | |__      ___    _ __     ___                                           |
@@ -51,7 +50,7 @@ This project will help you learn about :
 ||_|  |_|  \___|  |_|  |_|   \___/          |_|    |_| |_|   \___|  |_|      \___|                                          |
 |                                                                                                                           |
 |                                                                                                                           |
-|student@ubuntu:~/ascii-art$ ./ascii-art "hello" shadow --align=right                                                       |
+|$ go run . "hello" shadow --align=right                                                                                    |
 |                                                                                                                           |
 |                                                                                          _|                _| _|          |
 |                                                                                          _|_|_|     _|_|   _| _|   _|_|   |
@@ -60,7 +59,7 @@ This project will help you learn about :
 |                                                                                          _|    _|   _|_|_| _| _|   _|_|   |
 |                                                                                                                           |
 |                                                                                                                           |
-|student@ubuntu:~/ascii-art$ ./ascii-art "how are you" shadow --align=justify                                               |
+|$ go run . "how are you" shadow --align=justify                                                                            |
 |                                                                                                                           |
 |_|                                                                                                                         |
 |_|_|_|     _|_|   _|      _|      _|                  _|_|_| _|  _|_|   _|_|                    _|    _|   _|_|   _|    _| |
@@ -69,5 +68,5 @@ This project will help you learn about :
 |_|    _|   _|_|       _|      _|                      _|_|_| _|         _|_|_|                    _|_|_|   _|_|     _|_|_| |
 |                                                                                                      _|                   |
 |                                                                                                  _|_|                     |
-|student@ubuntu:~/ascii-art$                                                                                                |
+|$                                                                                                                          |
 ```

subjects/ascii-art/output/README.md

@@ -27,9 +27,8 @@ This project will help you learn about :
 ### Usage
 
 ```console
-student@ubuntu:~/ascii-art$ go build
-student@ubuntu:~/ascii-art$ ./ascii-art "hello" standard --output=banner.txt
-student@ubuntu:~/ascii-art$ cat banner.txt
+$ go run . "hello" standard --output=banner.txt
+$ cat banner.txt
  _              _   _
 | |            | | | |
 | |__     ___  | | | |   ___
@@ -39,8 +38,8 @@ student@ubuntu:~/ascii-art$ cat banner.txt
 
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art "Hello There!" shadow --output=banner.txt
-student@ubuntu:~/ascii-art$ cat banner.txt
+$ go run . "Hello There!" shadow --output=banner.txt
+$ cat banner.txt
 
 _|    _|          _| _|                _|_|_|_|_| _|                                  _|
 _|    _|   _|_|   _| _|   _|_|             _|     _|_|_|     _|_|   _|  _|_|   _|_|   _|
@@ -50,5 +49,5 @@ _|    _|   _|_|_| _| _|   _|_|             _|     _|    _|   _|_|_| _|         _
 
 
 
-student@ubuntu:~/ascii-art$
+$
 ```

subjects/ascii-art/reverse/README.md

@@ -30,8 +30,7 @@ This project will help you learn about :
 ### Usage
 
 ```console
-student@ubuntu:~/ascii-art$ go build
-student@ubuntu:~/ascii-art$ cat file.txt
+$ cat file.txt
  _              _   _
 | |            | | | |
 | |__     ___  | | | |   ___
@@ -41,7 +40,7 @@ student@ubuntu:~/ascii-art$ cat file.txt
 
 
 
-student@ubuntu:~/ascii-art$ ./ascii-art --reverse=file.txt
+$ go run . --reverse=file.txt
 hello
-student@ubuntu:~/ascii-art$
+$
 ```

subjects/atoi/README.md

@@ -45,8 +45,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/atoi/test$ go build
-student@ubuntu:~/atoi/test$ ./test
+$ go run .
 12345
 12345
 0
@@ -55,5 +54,5 @@ student@ubuntu:~/atoi/test$ ./test
 -1234
 0
 0
-student@ubuntu:~/atoi/test$
+$
 ```

subjects/atoibase/README.md

@@ -50,12 +50,11 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/atoibase/test$ go build
-student@ubuntu:~/atoibase/test$ ./test
+$ go run .
 125
 125
 125
 125
 0
-student@ubuntu:~/atoibase/test$
+$
 ```

subjects/balancedstring/README.md

@@ -14,15 +14,15 @@ It will only be tested strings containing the characters 'C' and 'D'.
 ### Usage
 
 ```console
-student@ubuntu:~/balancedstring$ go build
-student@ubuntu:~/balancedstring$ ./balancedstring "CDCCDDCDCD"
+$ go run . "CDCCDDCDCD"
 4
-student@ubuntu:~/balancedstring$ ./balancedstring "CDDDDCCCDC"
+$ go run . "CDDDDCCCDC"
 3
-student@ubuntu:~/balancedstring$ ./balancedstring "DDDDCCCC"
+$ go run . "DDDDCCCC"
 1
-student@ubuntu:~/balancedstring$ ./balancedstring "CDCCCDDCDD"
+$ go run . "CDCCCDDCDD"
 2
+$
 ```
 
 In first example "CDCCDDCDCD" can be split into "CD", "CCDD", "CD", "CD", each substring contains same number of 'C' and 'D'.

subjects/banner/README.md

@@ -111,10 +111,10 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/banner/test$ cargo run
+$ cargo run
 "0.5"
 "0"
 "invalid float literal"
 "invalid float literal"
-student@ubuntu:~/banner/test$
+$
 ```

subjects/basicatoi/README.md

@@ -40,10 +40,9 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/basicatoi/test$ go build
-student@ubuntu:~/basicatoi/test$ ./test
+$ go run .
 12345
 12345
 0
-student@ubuntu:~/basicatoi/test$
+$
 ```

subjects/basicatoi2/README.md

@@ -41,11 +41,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/basicatoi2/test$ go build
-student@ubuntu:~/basicatoi2/test$ ./test
+$ go run .
 12345
 12345
 0
 0
-student@ubuntu:~/basicatoi2/test$
+$
 ```

subjects/basicjoin/README.md

@@ -33,8 +33,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/basicjoin/test$ go build
-student@ubuntu:~/basicjoin/test$ ./test
+$ go run .
 Hello! How are you?
-student@ubuntu:~/basicjoin/test$
+$
 ```

subjects/bigger/README.md

@@ -38,7 +38,7 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/bigger/test$ cargo run
+$ cargo run
 The biggest of the elements in the HashMap is 334
-student@ubuntu:~/bigger/test$
+$
 ```

subjects/blood_types/README.md

@@ -104,9 +104,9 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/blood_types/test$ cargo run
+$ cargo run
 recipients of O+ [AB+, O+, A+, B+]
 donors of O+ [O+, O-]
 donors of O+ can receive from A- false
-student@ubuntu:~/blood_types/test$
+$
 ```

subjects/blood_types_s/README.md

@@ -84,9 +84,9 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/blood_types_s/test$ cargo run
+$ cargo run
 recipients of O+ [BloodType { antigen: AB, rh_factor: Positive }, BloodType { antigen: O, rh_factor: Positive }, BloodType { antigen: A, rh_factor: Positive }, BloodType { antigen: B, rh_factor: Positive }]
 donors of O+ [BloodType { antigen: O, rh_factor: Positive }, BloodType { antigen: O, rh_factor: Negative }]
 donors of O+ can receive from BloodType { antigen: O, rh_factor: Positive } true
-student@ubuntu:~/blood_types_s/test$
+$
 ```

subjects/boolean/README.md

@@ -40,9 +40,8 @@ func main() {
 ### Usage
 
 ```console
-student@ubuntu:~/boolean$ go build
-student@ubuntu:~/boolean$ ./boolean "not" "odd"
+$ go run . "not" "odd"
 I have an even number of arguments
-student@ubuntu:~/boolean$ ./boolean "not even"
+$ go run . "not even"
 I have an odd number of arguments
 ```

subjects/border_cross/README.md

@@ -73,7 +73,7 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/border_cross/test$ cargo run
+$ cargo run
 ["Model 3", "Ranger"]
-student@ubuntu:~/border_cross/test$
+$
 ```

subjects/borrow/README.md

@@ -33,9 +33,9 @@ fn main() {
 
 And its output:
 
-```rust
-student@ubuntu:~/borrow/test$ cargo run
+```console
+$ cargo run
 str_len("hello") = 5
 str_len("camelCase") = 9
-student@ubuntu:~/borrow/test$
+$
 ```

subjects/borrow_box/README.md

@@ -82,10 +82,10 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/borrow_box/test$ cargo run
+$ cargo run
 ("Same score! tied", 0)
 ("Same score! tied", 2)
 ("Joao", 3)
 "game deleted: id -> 0"
-student@ubuntu:~/borrow_box/test$
+$
 ```

subjects/borrow_me_the_reference/README.md

@@ -54,7 +54,7 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/borrow_me_the_reference/test$ cargo run
+$ cargo run
 ("borrow", ["✔", "✔", "✘", "✔"], 75)
-student@ubuntu:~/borrow_me_the_reference/test$
+$
 ```

subjects/box_it/README.md

@@ -50,10 +50,10 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/box_it/test$ cargo run
+$ cargo run
 Box value : [5500, 8900, 32]
 size occupied in the stack : 8 bytes
 value : [5500, 8900, 32]
 size occupied in the stack : 24 bytes
-student@ubuntu:~/box_it/test$
+$
 ```

subjects/box_recursion/README.md

@@ -72,9 +72,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/box_recursion/test$ cargo run
+$ cargo run
 WorkEnvironment { grade: Some(Worker { worker_type: "Normal Worker", worker_name: "Alice", next_worker: Some(Worker { worker_type: "Normal Worker", worker_name: "Ana", next_worker: Some(Worker { worker_type: "Manager", worker_name: "Monica", next_worker: Some(Worker { worker_type: "CEO", worker_name: "Marie", next_worker: None }) }) }) }) }
 Some(("Alice", "Normal Worker"))
 WorkEnvironment { grade: None }
-student@ubuntu:~/box_recursion/test$
+$
 ```

subjects/boxing_todo/README.md

@@ -165,9 +165,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/boxing_todo/test$ cargo run
+$ cargo run
 TodoList { title: "TODO LIST FOR PISCINE RUST", tasks: [Task { id: 0, description: "do this", level: 0 }, Task { id: 1, description: "do that", level: 5 }] }
 Todo List parse failed: None
 Fail to parses todo Some(Malformed(UnexpectedCharacter { ch: ',', line: 2, column: 18 }))
-student@ubuntu:~/boxing_todo/test$
+$
 ```

subjects/brackets/README.md

@@ -13,13 +13,13 @@ If there is no argument, the program must print nothing.
 ### Usage
 
 ```console
-student@ubuntu:~/brackets$ ./brackets '(johndoe)' | cat -e
+$ go run . '(johndoe)' | cat -e
 OK$
-student@ubuntu:~/brackets$ ./brackets '([)]' | cat -e
+$ go run . '([)]' | cat -e
 Error$
-student@ubuntu:~/brackets$ ./brackets '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
+$ go run . '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
 OK$
 OK$
-student@ubuntu:~/brackets$ ./brackets
-student@ubuntu:~/brackets$
+$ go run .
+$
 ```

subjects/brackets_matching/README.md

@@ -13,13 +13,13 @@ If there is no argument, the program must print nothing.
 ### Usage
 
 ```console
-student@ubuntu:~/brackets_matching/brackets$ ./brackets '(johndoe)' | cat -e
+$ go run . '(johndoe)' | cat -e
 OK$
-student@ubuntu:~/brackets_matching/brackets$ ./brackets '([)]' | cat -e
+$ go run . '([)]' | cat -e
 Error$
-student@ubuntu:~/brackets_matching/brackets$ ./brackets '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
+$ go run . '' '{[(0 + 0)(1 + 1)](3*(-1)){()}}' | cat -e
 OK$
 OK$
-student@ubuntu:~/brackets_matching/brackets$ ./brackets
-student@ubuntu:~/brackets_matching/brackets$
+$ go run .
+$
 ```

subjects/brainfuck/README.md

@@ -22,13 +22,12 @@ Any other character is a comment.
 ### Usage
 
 ```console
-student@ubuntu:~/brainfuck$ go build
-student@ubuntu:~/brainfuck$ ./brainfuck "++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>." | cat -e
+$ go run . "++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>." | cat -e
 Hello World!$
-student@ubuntu:~/brainfuck$ ./brainfuck "+++++[>++++[>++++H>+++++i<<-]>>>++\n<<<<-]>>--------.>+++++.>." | cat -e
+$ go run . "+++++[>++++[>++++H>+++++i<<-]>>>++\n<<<<-]>>--------.>+++++.>." | cat -e
 Hi$
-student@ubuntu:~/brainfuck$ ./brainfuck "++++++++++[>++++++++++>++++++++++>++++++++++<<<-]>---.>--.>-.>++++++++++." | cat -e
+$ go run . "++++++++++[>++++++++++>++++++++++>++++++++++<<<-]>---.>--.>-.>++++++++++." | cat -e
 abc$
-student@ubuntu:~/brainfuck$ ./brainfuck
-student@ubuntu:~/brainfuck$
+$ go run .
+$
 ```

subjects/btreeapplybylevel/README.md

@@ -36,11 +36,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeapplybylevel/test$ go build
-student@ubuntu:~/btreeapplybylevel/test$ ./test
+$ go run .
 4
 1
 7
 5
-student@ubuntu:~/btreeapplybylevel/test$
+$
 ```

subjects/btreeapplyinorder/README.md

@@ -37,11 +37,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeapplyinorder/test$ go build
-student@ubuntu:~/btreeapplyinorder/test$ ./test
+$ go run .
 1
 4
 5
 7
-student@ubuntu:~/btreeapplyinorder/test$
+$
 ```

subjects/btreeapplypostorder/README.md

@@ -37,11 +37,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeapplypostorder/test$ go build
-student@ubuntu:~/btreeapplypostorder/test$ ./test
+$ go run .
 1
 5
 7
 4
-student@ubuntu:~/btreeapplypostorder/test$
+$
 ```

subjects/btreeapplypreorder/README.md

@@ -37,11 +37,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeapplypreorder/test$ go build
-student@ubuntu:~/btreeapplypreorder/test$ ./test
+$ go run .
 4
 1
 7
 5
-student@ubuntu:~/btreeapplypreorder/test$
+$
 ```

subjects/btreedeletenode/README.md

@@ -43,8 +43,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreedeletenode/test$ go build
-student@ubuntu:~/btreedeletenode/test$ ./test
+$ go run .
 Before delete:
 1
 4
@@ -54,5 +53,5 @@ After delete:
 1
 5
 7
-student@ubuntu:~/btreedeletenode/test$
+$
 ```

subjects/btreeinsertdata/README.md

@@ -47,11 +47,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeinsertdata$ go build
-student@ubuntu:~/btreeinsertdata$ ./btreeinsertdata
+$ go run .
 1
 4
 5
 7
-student@ubuntu:~/btreeinsertdata$
+$
 ```

subjects/btreeisbinary/README.md

@@ -36,8 +36,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeisbinary/test$ go build
-student@ubuntu:~/btreeisbinary/test$ ./test
+$ go run .
 true
-student@ubuntu:~/btreeisbinary/test$
+$
 ```

subjects/btreelevelcount/README.md

@@ -37,8 +37,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreelevelcount/test$ go build
-student@ubuntu:~/btreelevelcount/test$ ./test
+$ go run .
 3
-student@ubuntu:~/btreelevelcount/test$
+$
 ```

subjects/btreemax/README.md

@@ -38,8 +38,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreemax/test$ go build
-student@ubuntu:~/btreemax/test$ ./test
+$ go run .
 7
-student@ubuntu:~/btreemax/test$
+$
 ```

subjects/btreemin/README.md

@@ -38,8 +38,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreemin/test$ go build
-student@ubuntu:~/btreemin/test$ ./test
+$ go run .
 1
-student@ubuntu:~/btreemin/test$
+$
 ```

subjects/btreeprintroot/README.md

@@ -38,10 +38,9 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreeprintroot/printroot$ go build
-student@ubuntu:~/btreeprintroot/printroot$ ./printroot
+$ go run .
 who
 are
 you
-student@ubuntu:~/btreeprintroot/test$
+$
 ```

subjects/btreesearchitem/README.md

@@ -63,11 +63,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreesearchitem/test$ go build
-student@ubuntu:~/btreesearchitem/test$ ./test
+$ go run .
 Item selected -> 7
 Parent of selected item -> 4
 Left child of selected item -> 5
 Right child of selected item -> nil
-student@ubuntu:~/btreesearchitem/test$
+$
 ```

subjects/btreetransplant/README.md

@@ -39,11 +39,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/btreetransplant/test$ go build
-student@ubuntu:~/btreetransplant/test$ ./test
+$ go run .
 3
 4
 5
 7
-student@ubuntu:~/btreetransplant/test$
+$
 ```

subjects/capitalize/README.md

@@ -34,8 +34,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/capitalize/test$ go build
-student@ubuntu:~/capitalize/test$ ./test
+$ go run .
 Hello! How Are You? How+Are+Things+4you?
-student@ubuntu:~/capitalize/test$
+$
 ```

subjects/capitalizing/README.md

@@ -38,9 +38,9 @@ fn main() {
 And its output
 
 ```consoole
-student@ubuntu:~/capitalizing/test$ cargo run
+$ cargo run
 Joe is missing
 Jill Is Leaving A
 HEllO thERE
-student@ubuntu:~/capitalizing/test$
+$
 ```

subjects/card_deck/README.md

@@ -82,7 +82,7 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/card_deck/test$ cargo run
+$ cargo run
 Your card is Card { suit: Club, rank: Ace }
-student@ubuntu:~/card_deck/test$
+$
 ```

subjects/cat/README.md

@@ -9,26 +9,25 @@ Write a program that behaves like a simplified `cat` command.
 - If the program is called without arguments it should take the standard input (stdin) and print it back on the standard output (stdout).
 
 ```console
-student@ubuntu:~/cat$ echo '"Programming is a skill best acquired by practice and example rather than from books" by Alan Turing' > quest8.txt
-student@ubuntu:~/cat$ cat <<EOF> quest8T.txt
+$ echo '"Programming is a skill best acquired by practice and example rather than from books" by Alan Turing' > quest8.txt
+$ cat <<EOF> quest8T.txt
 "Alan Mathison Turing was an English mathematician, computer scientist, logician, cryptanalyst. Turing was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general-purpose computer. Turing is widely considered to be the father of theoretical computer science and artificial intelligence."
 EOF
-student@ubuntu:~/cat$ go build
-student@ubuntu:~/cat$ ./cat abc
+$ go run . abc
 ERROR: abc: No such file or directory
-student@ubuntu:~/cat$ ./cat quest8.txt
+$ go run . quest8.txt
 "Programming is a skill best acquired by pratice and example rather than from books" by Alan Turing
-student@ubuntu:~/cat$ ./cat quest8.txt abc
+$ go run . quest8.txt abc
 "Programming is a skill best acquired by pratice and example rather than from books" by Alan Turing
 ERROR: abc: No such file or directory
-student@ubuntu:~/cat$ cat quest8.txt | ./cat
+$ cat quest8.txt | ./cat
 "Programming is a skill best acquired by pratice and example rather than from books" by Alan Turing
-student@ubuntu:~/cat$ ./cat
+$ go run .
 Hello
 Hello
 ^C
-student@ubuntu:~/cat$ ./cat quest8.txt quest8T.txt
+$ go run . quest8.txt quest8T.txt
 "Programming is a skill best acquired by pratice and example rather than from books" by Alan Turing
 "Alan Mathison Turing was an English mathematician, computer scientist, logician, cryptanalyst. Turing was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general-purpose computer. Turing is widely considered to be the father of theoretical computer science and artificial intelligence."
-student@ubuntu:~/cat$
+$
 ```

subjects/changeorder/README.md

@@ -54,7 +54,7 @@ func main() {
 Its output:
 
 ```console
-$ go build
-$ ./main
+$ go run .
 1 -> 3 -> 5 -> 2 -> 4
+$
 ```

subjects/changes/README.md

@@ -54,8 +54,8 @@ fn main() {
 And its expected output
 
 ```console
-student@ubuntu:~/changes/test$ cargo run
+$ cargo run
 brightness = 0
 new brightness = 200
-student@ubuntu:~/changes/test$
+$
 ```

subjects/chunk/README.md

@@ -33,12 +33,11 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/chunk/test$ go build
-student@ubuntu:~/chunk/test$ ./test
+$ go run .
 []
 
 [[0 1 2] [3 4 5] [6 7]]
 [[0 1 2 3 4] [5 6 7]]
 [[0 1 2 3] [4 5 6 7]]
-student@ubuntu:~/chunk/test$
+$
 ```

subjects/cipher/README.md

@@ -48,9 +48,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/cipher/test$ cargo run
+$ cargo run
 Some(Ok(true))
 Some(Err(CipherError { validation: false, expected: "1Svool 2dliow!" }))
 None
-student@ubuntu:~/cipher/test$
+$
 ```

subjects/circle/README.md

@@ -93,11 +93,11 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/circle/test$ cargo run
+$ cargo run
 circle = Circle { center: Point { x: 500.0, y: 500.0 }, radius: 150.0 } area = 70685.83470577035
 circle = Circle { center: Point { x: 500.0, y: 500.0 }, radius: 150.0 } diameter = 300
 circle1 = Circle { center: Point { x: 80.0, y: 115.0 }, radius: 30.0 } diameter = 60
 circle and circle1 intersect = false
 distance between Point { x: 1.0, y: 1.0 } and Point { x: 0.0, y: 0.0 } is 1.4142135623730951
-student@ubuntu:~/circle/test$
+$
 ```

subjects/cl-camp2/README.md

@@ -11,7 +11,7 @@ A line is a sequence of characters preceding the [end of line](https://en.wikipe
 ### Usage
 
 ```console
-student@ubuntu:~/cl-camp2/test$ cat -e r
+$ cat -e r
 R$
-student@ubuntu:~/cl-camp2/test$
+$
 ```

subjects/cl-camp4/README.md

@@ -17,8 +17,8 @@ Create a file `myfamily.sh`, which will show a subject's family (key: relatives)
 ### Usage
 
 ```console
-student@ubuntu:~/cl-camp4/test$ export HERO_ID=1
-student@ubuntu:~/cl-camp4/test$ ./myfamily.sh
+$ export HERO_ID=1
+$ ./myfamily.sh
 Marlo Chandler-Jones (wife); Polly (aunt); Mrs. Chandler (mother-in-law); Keith Chandler, Ray Chandler, three unidentified others (brothers-in-law); unidentified father (deceased); Jackie Shorr (alleged mother; unconfirmed)
-student@ubuntu:~/cl-camp4/test$
+$
 ```

subjects/cl-camp5/README.md

@@ -13,11 +13,11 @@ That command will only show the name of the files without the `.sh`.
 ### Usage
 
 ```console
-student@ubuntu:~/cl-camp5/test$ ./lookagain.sh | cat -e
+$ ./lookagain.sh | cat -e
 file1$
 file2$
 file3$
-student@ubuntu:~/cl-camp5/test$
+$
 ```
 
 ### Hint

subjects/cl-camp6/README.md

@@ -9,7 +9,7 @@ Create a file `countfiles.sh`, which will print the number **(and only the numbe
 ### Usage
 
 ```console
-student@ubuntu:~/cl-camp6/test$ ./countfiles.sh | cat -e
+$ ./countfiles.sh | cat -e
 12$
-student@ubuntu:~/cl-camp6/test$
+$
 ```

subjects/cl-camp7/README.md

@@ -9,7 +9,7 @@ Create a file `"\?$*'ChouMi'*$?\"` that will contain "01" and **nothing else**.
 ### Usage
 
 ```console
-student@ubuntu:~/cl-camp7/test$ ls | cat -e
+$ ls | cat -e
 "\?$*'ChouMi'*$?\"$
-student@ubuntu:~/cl-camp7/test$
+$
 ```

subjects/cleanstr/README.md

@@ -17,13 +17,12 @@ program displays nothing.
 ### Usage :
 
 ```console
-student@ubuntu:~/cleanstr$ go build
-student@ubuntu:~/cleanstr$ ./cleanstr "you see it's easy to display the same thing" | cat -e
+$ go run . "you see it's easy to display the same thing" | cat -e
 you see it's easy to display the same thing$
-student@ubuntu:~/cleanstr$ ./cleanstr " only    it's  harder   "
+$ go run . " only    it's  harder   "
 only it's harder$
-student@ubuntu:~/cleanstr$ ./cleanstr " how funny" "Did you   hear Mathilde ?"
+$ go run . " how funny" "Did you   hear Mathilde ?"
+$
+$ go run . ""
 $
-student@ubuntu:~/cleanstr$ ./cleanstr ""
-student@ubuntu:~/cleanstr$
 ```

subjects/closures/README.md

@@ -35,7 +35,7 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/closures/test$ cargo run
+$ cargo run
 All elements in [4, 16, 36, ..., 10000], len = 50
-student@ubuntu:~/closures/test$
+$
 ```

subjects/collatzcountdown/README.md

@@ -35,8 +35,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/{{ROOT}}/test$ go build
-student@ubuntu:~/{{ROOT}}/test$ ./test
+$ go run .
 9
-student@ubuntu:~/{{ROOT}}/test$
+$
 ```

subjects/collect/README.md

@@ -32,8 +32,8 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/collect/test$ cargo run
+$ cargo run
 [1, 2, 3, 4, 5, 7]
 [1, 2, 3, 4, 5, 7]
-student@ubuntu:~/collect/test$
+$
 ```

subjects/comcheck/README.md

@@ -11,10 +11,9 @@ Write a program `comcheck` that displays on the standard output `Alert!!!` follo
 ### Usage
 
 ```console
-student@ubuntu:~/comcheck$ go build
-student@ubuntu:~/comcheck$ ./comcheck "I" "Will" "Enter" "the" "galaxy"
+$ go run . "I" "Will" "Enter" "the" "galaxy"
 Alert!!!
-student@ubuntu:~/comcheck$ ./comcheck "galaxy 01" "do" "you" "hear" "me"
+$ go run . "galaxy 01" "do" "you" "hear" "me"
 Alert!!!
-student@ubuntu:~/comcheck$
+$
 ```

subjects/commits_stats/README.md

@@ -51,8 +51,8 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/commits_stats/test$ cargo run
+$ cargo run
 {"2020-W44": 5, "2020-W36": 1, "2020-W31": 1, ... ,"2020-W45": 4, "2020-W46": 4}
 {"homembaixinho": 2, "mwenzkowski": 3, ... ,"tamirzb": 1, "paul-ri": 2, "RPigott": 1}
-student@ubuntu:~/commits_stats/test$
+$
 ```

subjects/compact/README.md

@@ -53,8 +53,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/compact/test$ go build
-student@ubuntu:~/compact/test$ ./test
+$ go run .
 a
 
 b
@@ -65,5 +64,5 @@ Size after compacting: 3
 a
 b
 c
-student@ubuntu:~/compact/test$
+$
 ```

subjects/compare/README.md

@@ -34,10 +34,9 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/compare/test$ go build
-student@ubuntu:~/compare/test$ ./test
+$ go run .
 0
 -1
 1
-student@ubuntu:~/compare/test$
+$
 ```

subjects/concat/README.md

@@ -33,8 +33,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/concat/test$ go build
-student@ubuntu:~/concat/test$ ./test
+$ go run .
 Hello! How are you?
-student@ubuntu:~/concat/test$
+$
 ```

subjects/concatparams/README.md

@@ -34,11 +34,10 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/concatparams/test$ go build
-student@ubuntu:~/concatparams/test$ ./test
+$ go run .
 Hello
 how
 are
 you?
-student@ubuntu:~/concatparams/test$
+$
 ```

subjects/convertbase/README.md

@@ -37,8 +37,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/convertbase/test$ go build
-student@ubuntu:~/convertbase/test$ ./test
+$ go run .
 43
-student@ubuntu:~/convertbase/test$
+$
 ```

subjects/copy/README.md

@@ -60,9 +60,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/copy/test$ cargo run
+$ cargo run
 (0, 1.0, inf)
 ("1 2 4 5 6", "2.718281828459045 7.38905609893065 54.598150033144236 148.4131591025766 403.4287934927351")
 ([1, 2, 4, 5], [0.0, 0.6931471805599453, 1.3862943611198906, 1.6094379124341003])
-student@ubuntu:~/copy/test$
+$
 ```

subjects/costumeprofit/README.md

@@ -16,9 +16,10 @@ Input will be given as 6 arguments, your output should be displayed as standard
 
 In the output put '\n' at the end.
 
-Input: `./main **a** **b** **c** **d** **e** **f**`
+Input: `go run . **a** **b** **c** **d** **e** **f**`
 
 ```console
-$ ./main 12 11 13 20 4 6
+$ go run . 12 11 13 20 4 6
 102
+$
 ```

subjects/countdown/README.md

@@ -7,8 +7,7 @@ Write a program that displays all digits in descending order, followed by a newl
 ### Usage
 
 ```console
-student@ubuntu:~/countdown/test$ go build
-student@ubuntu:~/countdown/test$ ./test
+$ go run .
 9876543210
-student@ubuntu:~/countdown/test$
+$
 ```

subjects/countif/README.md

@@ -37,9 +37,8 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/countif/test$ go build
-student@ubuntu:~/countif/test$ ./test
+$ go run .
 0
 2
-student@ubuntu:~/countif/test$
+$
 ```

subjects/counting_words/README.md

@@ -42,9 +42,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/counting_words/test$ cargo run
+$ cargo run
 {"hello": 1, "world": 1}
 {"and": 2, "human": 1, "universe": 2, "the": 2, "i\'m": 1, "about": 1, "einstein": 1, "are": 1, "infinite": 1, "sure": 1, "albert": 1, "two": 1, "things": 1, "not": 1, "stupidity": 1}
 {"batman": 3, "stop": 2}
-student@ubuntu:~/counting_words/test$
+$
 ```

subjects/createelem/README.md

@@ -38,8 +38,7 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/createelem/test$ go build
-student@ubuntu:~/createelem/test$ ./test
+$ go run .
 &{1234}
-student@ubuntu:~/createelem/test$
+$
 ```

subjects/delete_prefix/README.md

@@ -27,8 +27,8 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/delete_prefix/test$ cargo run
+$ cargo run
 Some("cdefghijklmnop")
 None
-student@ubuntu:~/delete_prefix/test$
+$
 ```

subjects/diamond_creation/README.md

@@ -43,8 +43,8 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/diamond_creation/test$ cargo run
+$ cargo run
 ["A"]
 ["  A  ", " B B ", "C   C", " B B ", "  A  "]
-student@ubuntu:~/diamond_creation/test$
+$
 ```

subjects/display_table/README.md

@@ -74,11 +74,11 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/display_table/test$ cargo run
+$ cargo run
 |  Model  |  Piece N°   | In Stock  | Description |
 |---------+-------------+-----------+-------------|
 | model 1 | 43-EWQE304  |    30     | Piece for x |
 | model 2 | 98-QCVX5433 | 100000000 |      -      |
 | model y |   78-NMNH   |    60     |   nothing   |
-student@ubuntu:~/display_table/test$
+$
 ```

subjects/displaya/README.md

@@ -9,12 +9,11 @@ If the number of arguments is not 1, the program displays an `a` followed by a n
 ### Usage
 
 ```console
-student@ubuntu:~/displaya/test$ go build
-student@ubuntu:~/displaya/test$ ./test "abc"
+$ go run . "abc"
 a
-student@ubuntu:~/displaya/test$ ./test "bcvbvA"
+$ go run . "bcvbvA"
 a
-student@ubuntu:~/displaya/test$ ./test "nbv"
+$ go run . "nbv"
 a
-student@ubuntu:~/displaya/test$
+$
 ```

subjects/displayalpham/README.md

@@ -7,8 +7,7 @@ Write a program that displays the alphabet, with even letters in uppercase, and
 ### Usage
 
 ```console
-student@ubuntu:~/displayalpham$ go build
-student@ubuntu:~/displayalpham$ ./displayalpham | cat -e
+$ go run . | cat -e
 aBcDeFgHiJkLmNoPqRsTuVwXyZ$
-student@ubuntu:~/displayalpham$
+$
 ```

subjects/displayalrevm/README.md

@@ -7,8 +7,7 @@ Write a program that displays the alphabet in reverse, with even letters in uppe
 ### Usage
 
 ```console
-student@ubuntu:~/displayalrevm$ go build
-student@ubuntu:~/displayalrevm$ ./displayalrevm | cat -e
+$ go run . | cat -e
 zYxWvUtSrQpOnMlKjIhGfEdCbA$
-student@ubuntu:~/displayalrevm$
+$
 ```

subjects/displayfile/README.md

@@ -7,13 +7,12 @@ Write a program that displays, on the standard output, the content of a file giv
 ### Usage :
 
 ```console
-student@ubuntu:~/displayfile$ go build
-student@ubuntu:~/displayfile$ ./displayfile
+$ go run .
 File name missing
-student@ubuntu:~/displayfile$ echo "Almost there!!" > quest8.txt
-student@ubuntu:~/displayfile$ ./displayfile quest8.txt main.go
+$ echo "Almost there!!" > quest8.txt
+$ go run . quest8.txt main.go
 Too many arguments
-student@ubuntu:~/displayfile$ ./displayfile quest8.txt
+$ go run . quest8.txt
 Almost there!!
-student@ubuntu:~/displayfile$
+$
 ```

subjects/displayfirstparam/README.md

@@ -7,11 +7,10 @@ Write a program that displays its first argument, if there is one.
 ### Usage
 
 ```console
-student@ubuntu:~/displayfirstparam/test$ go build
-student@ubuntu:~/displayfirstparam/test$ ./test hello there
+$ go run . hello there
 hello
-student@ubuntu:~/displayfirstparam/test$ ./test "hello there" how are you
+$ go run . "hello there" how are you
 hello there
-student@ubuntu:~/displayfirstparam/test$ ./test
-student@ubuntu:~/displayfirstparam/test$
+$ go run .
+$
 ```

subjects/displaylastparam/README.md

@@ -7,13 +7,12 @@ Write a program that displays its last argument, if there is one.
 ### Usage
 
 ```console
-student@ubuntu:~/displaylastparam/test$ go build
-student@ubuntu:~/displaylastparam/test$ ./test hello there
+$ go run . hello there
 there
-student@ubuntu:~/displaylastparam/test$ ./test "hello there" how are you
+$ go run . "hello there" how are you
 you
-student@ubuntu:~/displaylastparam/test$ ./test "hello there"
+$ go run . "hello there"
 hello there
-student@ubuntu:~/displaylastparam/test$ ./test
-student@ubuntu:~/displaylastparam/test$
+$ go run .
+$
 ```

subjects/displayz/README.md

@@ -9,12 +9,11 @@ If the number of arguments is not 1, the program displays an `z` followed by a n
 ### Usage
 
 ```console
-student@ubuntu:~/displayz/test$ go build
-student@ubuntu:~/displayz/test$ ./test "xyz"
+$ go run . "xyz"
 z
-student@ubuntu:~/displayz/test$ ./test "bcvbvZ"
+$ go run . "bcvbvZ"
 z
-student@ubuntu:~/displayz/test$ ./test "nbv"
+$ go run . "nbv"
 z
-student@ubuntu:~/displayz/test$ ./test
+$ go run .
 ```

subjects/division_and_remainder/README.md

@@ -41,7 +41,7 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/division_and_remainder/test$ cargo run
+$ cargo run
 9/4: division = 2, remainder = 1
-student@ubuntu:~/division_and_remainder/test$
+$
 ```

subjects/divmod/README.md

@@ -42,9 +42,8 @@ func main() {
 And its output :
 
 ```console
-student@ubuntu:~/divmod/test$ go build
-student@ubuntu:~/divmod/test$ ./test
+$ go run .
 6
 1
-student@ubuntu:~/divmod/test$
+$
 ```

subjects/doop/README.md

@@ -17,25 +17,24 @@ The program has to handle the modulo and division operations by 0 as shown on th
 ### Usage
 
 ```console
-student@ubuntu:~/doop/test$ go build doop.go
-student@ubuntu:~/doop/test$ ./doop
-student@ubuntu:~/doop/test$ ./doop 1 + 1 | cat -e
+$ go run .
+$ go run . 1 + 1 | cat -e
 2$
-student@ubuntu:~/doop/test$ ./doop hello + 1
-student@ubuntu:~/doop/test$ ./doop 1 p 1
-student@ubuntu:~/doop/test$ ./doop 1 / 0 | cat -e
+$ go run . hello + 1
+$ go run . 1 p 1
+$ go run . 1 / 0 | cat -e
 No division by 0$
-student@ubuntu:~/doop/test$ ./doop 1 % 0 | cat -e
+$ go run . 1 % 0 | cat -e
 No modulo by 0$
-student@ubuntu:~/doop/test$ ./doop 9223372036854775807 + 1
+$ go run . 9223372036854775807 + 1
 0
-student@ubuntu:~/doop/test$ ./doop -9223372036854775809 - 3
+$ go run . -9223372036854775809 - 3
 0
-student@ubuntu:~/doop/test$ ./doop 9223372036854775807 "*" 3
+$ go run . 9223372036854775807 "*" 3
 0
-student@ubuntu:~/doop/test$ ./doop 1 "*" 1
+$ go run . 1 "*" 1
 1
-student@ubuntu:~/doop/test$ ./doop 1 "*" -1
+$ go run . 1 "*" -1
 -1
-student@ubuntu:~/doop/test$
+$
 ```

subjects/doubtful/README.md

@@ -38,8 +38,8 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/doubtful/test$ cargo run
+$ cargo run
 Before changing the string: Hello
 After changing the string: Hello?
-student@ubuntu:~/doubtful/test$
+$
 ```

subjects/drop_the_thread/README.md

@@ -105,9 +105,9 @@ fn main() {
 And its output:
 
 ```console
-student@ubuntu:~/drop_the_thread/test$ cargo run
+$ cargo run
 (true, 0, Cell { value: 1 })
 (true, 1, Cell { value: 2 })
 (false, 2, Cell { value: 2 }, 1)
-student@ubuntu:~/drop_the_thread/test$
+$
 ```

subjects/easy_traits/README.md

@@ -42,8 +42,8 @@ fn main() {
 And its output
 
 ```console
-student@ubuntu:~/easy_traits/test$ cargo run
+$ cargo run
 hello world
 ["one", "two", "three"]
-student@ubuntu:~/easy_traits/test$
+$
 ```