docs(input-redirection): fix naming inconsistencies

sh/tests/input-redirection_test.sh

@@ -8,11 +8,11 @@ script_dirS=$(cd -P "$(dirname "$BASH_SOURCE")" &>/dev/null && pwd)
 
 challenge() {
     $(bash "$script_dirS"/student/input-redirection.sh)
-    submitted=$(bash "$script_dirS"/show_info.sh)
-    rm show_info.sh
+    submitted=$(bash "$script_dirS"/show-info.sh)
+    rm show-info.sh
     $(bash "$script_dirS"/solutions/input-redirection.sh)
-    expected=$(bash "$script_dirS"/show_info.sh)
-    rm show_info.sh
+    expected=$(bash "$script_dirS"/show-info.sh)
+    rm show-info.sh
 
     diff <(echo "$submitted") <(echo "$expected")
 }

sh/tests/solutions/input-redirection.sh

@@ -10,4 +10,4 @@ The current directory is: $PWD
 The default paths are: $PATH
 The current user is: $USERNAME
 EOF
-" > show_info.sh
+" > show-info.sh

subjects/devops/input-redirection/README.md

@@ -3,11 +3,11 @@
 ### Instructions
 
 In this exercise you will make a script `input-redirection.sh`.
-This script will read from an here document (`HereDoc`).
+This script will read from an here document (`heredoc`).
 Usually this technique is used to programmatically generate scripts or configuration files receiving some multiline input.
 
-The script will create a file `show_info.sh` that will run the command `cat` with `-e` as argument.
-The input to `cat` will be passed using `HereDoc`. Running `show_info.sh` will output some useful information about three common environment variables.
+The script will create a file `show-info.sh` that will run the command `cat` with `-e` as argument.
+The input to `cat` will be passed using `heredoc`. Running `show-info.sh` will output some useful information about three common environment variables.
 
 > The environment variables are `PWD`, `PATH` and `USERNAME`.
 
@@ -16,14 +16,14 @@ The input to `cat` will be passed using `HereDoc`. Running `show_info.sh` will o
 - First generate the script programmatically:
 
 ```console
-$ ./input_redirection.sh
+$ ./input-redirection.sh
 $
 ```
 
 - Then run the generated script:
 
 ```console
-$ ./show_info.sh
+$ bash ./show-info.sh
 The current directory is: current/path/example$
 The default paths are: /first_path:/second_path:/third_path$
 The current user is: your_name$
@@ -34,12 +34,12 @@ $
 
 You will need to mix more than one redirection tool:
 
-- `>` will be useful to create `show_info.sh`.
-- `<<` is the `HereDoc` redirection.
+- `>` will be useful to create `show-info.sh`.
+- `<<` is the `heredoc` redirection.
 
-- To start playing with `HereDoc` you can try `wc -l <<EOF`, type some random things, then write `EOF` on a new line and press `Enter`.
+- To start playing with `heredoc` you can try `wc -l <<EOF`, type some random things, then write `EOF` on a new line and press `Enter`.
 
-- Don't forget you can use `echo` to write into `show_info.sh`.
+- Don't forget you can use `echo` to write into `show-info.sh`.
 
 > You have to use Man or Google to know more about commands flags, in order to solve this exercise!
 > Google and Man will be your friends!