optionals

subjects/0-shell/job-control/audit.md

@@ -1,3 +1,7 @@
+#### General
+
+###### Was the project written in a compiled programming language?
+
 #### Functional
 
 ##### Try to run the command `"tar -czf home.tar.gz . &"` then run the command `"jobs"`.

subjects/0-shell/scripting/README.md

@@ -0,0 +1,75 @@
+## scripting
+
+### Objectives
+
+You must follow the same [principles](https://public.01-edu.org/subjects/0-shell/) as the first subject.
+
+In `scripting` you must find a way to make your `0-shell` run `bash` scripts.
+
+By now you should be familiar with the basics in an interactive shell. Now your purpose is to learn how to put those commands together to create scripts and run them in your own interpreter.
+
+Most users that think of `bash` think of it as a prompt and a command line. That is `bash` in interactive mode. BASH can also run in non-interactive mode, as when executing scripts. We can use scripts to automate certain logic. Scripts are basically lists of commands (just like the ones you can type on the command line), but stored in a file. When a script is executed, all these commands are (generally) executed sequentially, one after another.
+
+You will have to create your own valid script called `create-dir.sh`. This script must be able to create a new directory by checking if it exists or not. So, you will have to run the script, where it will ask the user for a "Directory name", then the user will give a name to the directory that he wants to create and press enter. The script will check if the directory exists or not and if it does not exist, the directory will be created and the message "Directory created" will be displayed. If the directory already exists, nothing will be created and the message "Directory exist" will be displayed.
+
+Your program must be able not just to run `.sh` files but to run the scripts directly on the interpreter. For example, it must be able to pass for loops, functions, manipulate data etc...:
+
+```
+for ((i = 0 ; i < 100 ; i++)); do
+  echo $i
+done
+```
+
+```
+STR="HELLO WORLD!"
+echo ${STR,}   #=> "hELLO WORLD!" (lowercase 1st letter)
+echo ${STR,,}  #=> "hello world!" (all lowercase)
+
+STR="hello world!"
+echo ${STR^}   #=> "Hello world!" (uppercase 1st letter)
+echo ${STR^^}  #=> "HELLO WORLD!" (all uppercase)
+```
+
+```
+myfunc() {
+    echo "hello $NAME"
+}
+```
+### Instructions
+
+- You have to create your own script.
+- The `0-shell` must be able to read and execute `bash` scripts.
+- The project has to be written in a compiled language like (C, Rust or other), no semi compiled language like (Pearl and others) are allowed.
+- The code must respect the [good practices](https://public.01-edu.org/subjects/good-practices/)
+
+This project will help you learn about:
+
+- Scripting/ scripting language
+- Commands syntax
+
+### Usage
+
+```
+student$ ./0-shell
+$ bash create-dir.sh
+Enter directory name
+Example
+Directory created
+$
+Enter directory name
+Example
+Directory exist
+$ exit
+student$
+```
+```
+student$ ./0-shell
+$ for ((i = 0 ; i < 5 ; i++)); do echo $i; done
+0
+1
+2
+3
+4
+$ exit
+student$
+```

subjects/0-shell/scripting/audit.md

@@ -0,0 +1,61 @@
+#### General
+
+###### Was the project written in a compiled programming language?
+
+###### Was the student script created?
+
+#### Functional
+
+##### Try to run the command `"bash create-dir.sh"` in your computer terminal and create the directory "Example".
+
+```
+Enter directory name
+Example
+Directory created
+```
+
+###### Can you confirm that the script is valid and the directory "Example" was created like the example above?
+
+##### Try to run the command `"bash create-dir.sh"` in the `0-shell` interpreter and create the directory "Example1".
+
+```
+Enter directory name
+Example1
+Directory created
+```
+
+###### Can you confirm that the script is valid and the directory "Example1" was created like the example above?
+
+##### Try to run the command `"bash create-dir.sh"` in the `0-shell` interpreter and create the directory with the same name as before "Example1".
+
+```
+Enter directory name
+Example1
+Directory exist
+```
+
+###### Can you confirm that the script is valid and the directory "Example1" was not created because it already exists like the example above?
+
+##### Try to run the command `"NAME="Alex""` followed by the command `"echo "Hello $NAME!""` in the `0-shell` interpreter.
+
+```
+Hello Alex!
+```
+
+###### Can you confirm that the script was validated and the project displayed the message as the example above?
+
+##### Try to run the command `"for ((i = 0 ; i < 5 ; i++)); do echo $i; done"` followed by the command `"echo "Hello $NAME!""` in the `0-shell` interpreter.
+
+```
+0
+1
+2
+3
+4
+```
+
+###### Can you confirm that the script was validated and the project displayed the message as the example above?
+
+##### Try to run the command `"echo "I'm in $(pwd)""` in the `0-shell` interpreter. Do the same in your computer terminal in the same folder.
+
+###### Can you confirm that the script was validated and the project displayed the same message in both terminals?