.bashrc and .bash_profile in Linux CLI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to source the .bashrc file inside .bash_profile.

Linux CLI

if [ -f ~/.bashrc ]; then
  [1] ~/.bashrc
fi

Drag options to blanks, or click blank then click option'

Aexecute

Brun

Csource

Dcall

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' or 'execute' which are not valid bash commands for sourcing files.

The 'source' command reads and executes commands from the specified file in the current shell.

2fill in blank

medium

Complete the code to check if the shell is a login shell in .bash_profile.

Linux CLI

case $- in
  *[1]*)
    echo "Login shell"
    ;;
esac

Drag options to blanks, or click blank then click option'

Al

Bi

Cx

Ds

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'i' which indicates interactive shell, not login shell.

The 'l' option in the shell flags indicates a login shell.

3fill in blank

hard

Fix the error in the .bashrc snippet to export a variable only if not already set.

Linux CLI

if [ -z "${MY_VAR}" ]; then
  export MY_VAR=[1]
fi

Drag options to blanks, or click blank then click option'

A"default"

B'default'

Cdefault

Ddefault_value

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the string causes syntax errors or unexpected behavior.

Quotes are needed around the string to assign it correctly as a value.

4fill in blank

hard

Complete the code to append a directory to PATH only if it is not already included.

Linux CLI

case ":$PATH:" in
  *":[1]:"* ;;
  * PATH=$PATH:"/my/custom/dir" ;;
esac

Drag options to blanks, or click blank then click option'

A/my/custom/dir

B:

C;

D/my/other/dir

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong separator like ';' which is for Windows PATH.

The code checks if '/my/custom/dir' is in PATH and appends it with ':' separator if not.

5fill in blank

hard

Fill all three blanks to create an alias in .bashrc that lists files with details and colors.

Linux CLI

alias ll='ls [1] [2] [3]'

Drag options to blanks, or click blank then click option'

A-l

B--color=auto

C-a

D-h

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up option order or missing '--color=auto' for colors.

The alias 'll' commonly uses '-l' for long listing, '-a' for all files, and '--color=auto' for colors.