Making scripts executable (chmod +x) in Bash Scripting - Mini Project: Build & Apply

Making a Bash Script Executable with chmod +x

📖 Scenario: You have written a simple bash script to greet users. Now, you want to run it directly from the terminal without typing bash before the script name.

🎯 Goal: Make your bash script executable using the chmod +x command and run it directly.

📋 What You'll Learn

Create a bash script file named greet.sh with a greeting message.

Add execute permission to the script using chmod +x greet.sh.

Run the script directly using ./greet.sh.

💡 Why This Matters

🌍 Real World

Making scripts executable is essential to run automation tasks, system maintenance scripts, or any custom commands quickly without typing the interpreter every time.

💼 Career

System administrators, DevOps engineers, and developers often write and run executable scripts to automate workflows and manage servers efficiently.

1

Create the bash script file

Create a file named greet.sh and write the following lines exactly:
#!/bin/bash
echo "Hello, welcome to the bash scripting world!"

Bash Scripting

# Create a file named greet.sh with the shebang and echo command
# Your code here

Need a hint?

The first line #!/bin/bash tells the system this is a bash script.

2

Add execute permission to the script

Use the command chmod +x greet.sh to add execute permission to the greet.sh file.

Bash Scripting

#!/bin/bash
echo "Hello, welcome to the bash scripting world!"
# Add execute permission using chmod +x greet.sh
# Your code here

Need a hint?

Use chmod +x followed by the script file name to make it executable.

3

Run the script directly

Run the script directly by typing ./greet.sh in the terminal.

Bash Scripting

#!/bin/bash
echo "Hello, welcome to the bash scripting world!"

chmod +x greet.sh

# Run the script directly
# Your code here

Need a hint?

Use ./ before the script name to run it from the current directory.

4

See the output of the script

Write a command to display the output of running ./greet.sh. The output should be:
Hello, welcome to the bash scripting world!

Bash Scripting

#!/bin/bash
echo "Hello, welcome to the bash scripting world!"

chmod +x greet.sh

./greet.sh

# Print the output of the script
# Your code here

Need a hint?

Running ./greet.sh will print the greeting message to the terminal.