diff --git a/Mastering-Bash/Bash-Exit-Status.md b/Mastering-Bash/Bash-Exit-Status.md
index 5f49233..18bb438 100644
--- a/Mastering-Bash/Bash-Exit-Status.md
+++ b/Mastering-Bash/Bash-Exit-Status.md
@@ -79,5 +79,6 @@ In this lab you will:
        exit 0
    fi
 
-   exit 1
+   # Exit status 3 will be returned if no previous condition was met.
+   exit 3
    ```
diff --git a/Mastering-Bash/Bash-Expansions.md b/Mastering-Bash/Bash-Expansions.md
index 50a2533..c0f0e5c 100644
--- a/Mastering-Bash/Bash-Expansions.md
+++ b/Mastering-Bash/Bash-Expansions.md
@@ -34,11 +34,11 @@ In this lab you will:
    leave the default value for the second run:
 
    ```console
-   $ ./default_answer pizza
+   $ ./default_answer.sh pizza
    The answer to life, the universe and everything is pizza
    Name of the script is ./default_answer
 
-   $ ./default_answer
+   $ ./default_answer.sh
    The answer to life, the universe and everything is 42
    Name of the script is ./default_answer
    ```
diff --git a/Mastering-Bash/Bash-Outputs.md b/Mastering-Bash/Bash-Outputs.md
index dae4a30..0c1c30f 100644
--- a/Mastering-Bash/Bash-Outputs.md
+++ b/Mastering-Bash/Bash-Outputs.md
@@ -11,7 +11,7 @@ In this lab you will:
 5. Append to the previously created file all the lines that contain a `:9` from
    `/etc/group` file.
 6. Sort the content of `results.txt` by name.
-7. Use the `less` pager to view the content of `/var/log/boot.log` and invoke an
+7. Use the `less` pager to view the content of `/etc/vimrc` and invoke an
    editor to edit the file.
 
 ## Solution
@@ -85,12 +85,14 @@ In this lab you will:
    unbound:x:994:
    ```
 
-7. Use the less pager to view the content of `/var/log/boot.log` and invoke an
+7. Use the less pager to view the content of `/etc/vimrc` and invoke an
    editor to edit the file:
 
    ```console
-   $ less /var/log/boot.log
+   $ less /etc/vimrc
    (less interface opens)
    ```
 
-   and then press `v`.
+   and then press `v`. You will see the `less` interface turning into a `vim`
+   one, but without the opportunity to make any change, since the file is not
+   owned by the `kirater` unprivileged user.
diff --git a/Mastering-Bash/Bash-Signals-Kill.md b/Mastering-Bash/Bash-Signals-Kill.md
index b7195c0..aac6564 100644
--- a/Mastering-Bash/Bash-Signals-Kill.md
+++ b/Mastering-Bash/Bash-Signals-Kill.md
@@ -18,7 +18,7 @@ In this lab you will:
 1. Launch the sleep command and then press `CTLR+Z`. Result should be:
 
    ```console
-   [kirater@machine ~] $ sleep 100
+   $ sleep 100
    ^Z
    [1]+  Stopped                 sleep 100
    ```