Creating a script file (.sh) in Bash Scripting - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a bash script with the correct shebang line.

Bash Scripting

#![1]
echo "Hello, world!"

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

A/bin/bash

B/usr/bin/python

C/bin/sh

D/usr/bin/perl

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong interpreter path like /usr/bin/python.

Forgetting the #! at the start of the line.

The shebang line #!/bin/bash tells the system to use the bash shell to run the script.

2fill in blank

medium

Complete the command to make the script file executable.

Bash Scripting

chmod [1] myscript.sh

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

A-r

B+x

C+r

D-w

Attempts:

3 left

💡 Hint

Common Mistakes

Using -r or -w which remove read or write permissions.

Using +r which only adds read permission, not execute.

chmod +x adds execute permission to the script file so it can be run.

3fill in blank

hard

Fix the error in the script to print the current directory.

Bash Scripting

echo "Current directory is: [1]"

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

A`PWD`

BPWD

C$PWD()

D$PWD

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the $ sign before PWD.

Using PWD as a command instead of a variable.

Use $PWD to get the current directory path as an environment variable.

4fill in blank

hard

Fill both blanks to create a script that prints all arguments passed to it.

Bash Scripting

echo "Arguments: [1]"
for arg in [2]; do
  echo "$arg"
done

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

A"$@"

B$*

C"$*"

D$@

Attempts:

3 left

💡 Hint

Common Mistakes

Using $* which treats all arguments as one string.

Quoting $@ in the loop which breaks iteration.

Use "$@" to print all arguments as separate words and $@ to loop over each argument.

5fill in blank

hard

Fill all three blanks to create a script that checks if a file exists and prints a message.

Bash Scripting

if [[ [1] [2] [3] ]]; then
  echo "File exists."
else
  echo "File not found."
fi

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

A-f

Bmyfile.txt

C-d

Dfile.txt

Attempts:

3 left

💡 Hint

Common Mistakes

Using -d which checks for directories, not files.

Using the wrong filename or missing quotes if needed.

Use -f to check if a regular file exists, and specify the filename to check.