Bash Scripting
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  • 50 Bash Script Examples to Kickstart Your Learning
  • Case statement in Bash Shell Scripting
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  • Extract Extension from File Path in Bash
  • Extract Filename without Extension from Full Path in Bash
  • Bash for Each File in a Directory
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  • Bash Continue – Using with for Loop
  • Bash Backticks vs Dollar Parentheses $()
  • How to Assign Variable in Bash
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  • Bash Division Explained
  • Bash Modulo (Division Remainder)
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  • Bash shift Command
  • Bash Looping Through Array of Strings
  • Bash read Command with Examples
  • Bash Check Empty Array
  • Using Bash For Loops to Iterate Over a List of Strings
  • Bash Break – Using with For Loop
  • How to Use seq With for Loop in Bash
  • How to Use $@ in Bash Scripting
  • Get the Current Script Directory in Bash
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  • How to Make Bash Script Executable Using Chmod
  • Step 1: Creating a Bash File
  • Step 2: Writing a Sample Script
  • Step 3: Executing the Bash Script
  • Step 4: Set Executable Permissions to Script
  • Step 5: Running Executable Script

How to Make Bash Script Executable Using Chmod

Previousscripting listNextShell Script to Check Linux Server Health

Last updated 1 year ago

How to Make Bash Script Executable Using Chmod

In this tutorial, I am going through the steps to create a bash script and make the script executable using the command. After that, you will be able to run it without using the sh or bash commands.

Step 1: Creating a Bash File

The first step is to create a new text file with .sh extension using the following command.

touch hello_script.sh

Step 2: Writing a Sample Script

Open the newly created file using any of your favorite editors to add the following bash script to the file.

$ vim hello_script.sh

#!/bin/bash
echo "Hello World"

Save and close the file using ESC +:wq!

Step 3: Executing the Bash Script

There are two ways to run the bash file. The first one is by using the bash command and the other is by setting the execute permission to bash file.

Let’s run the following command to execute the bash script using bash or sh command.

bash hello_script.sh

or

sh hello_script.sh

Step 4: Set Executable Permissions to Script

The second way to execute a bash script is by setting up the executable permissions.

To make a script executable for the owner of the file, use u+x filename.

chmod u+x hello_script.sh

To make the file executable for all users use +x filename or a+x filename.

chmod +x hello_script.sh

Step 5: Running Executable Script

After you have assigned the executable permissions to the script, you can run the script without bash command as shown.

$ ./hello_script.sh

Another Example

In the following example, I am going to write and execute a bash script to take a backup from source to destination.

$ vim backup_script.sh

#!/bin/bash
TIME=`date +%b-%d-%y`
DESTINATION=/home/ubuntu/backup-$BACKUPTIME.tar.gz
SOURCE=/data_folder
tar -cpzf $DESTINATION $SOURCE

Save and close the file using :wq! and give it the executable permissions for all users using the following command:

$ chmod +x backup_script.sh

Now run the script:

$ ./backup_script

Conclusion

At the end of this tutorial, you should be familiar with how to set a script executable in Linux.

I hope you enjoyed reading it, please leave your suggestion in the below command section.

chmod
Running a executable script
Execute the bash script
bash example script and execute