Introduction to Bash Scripting

Bash scripting allows you to automate tasks on your Linux server by creating a file with a series of commands.

Creating a Simple Script

1. Create a new file: `nano myscript.sh`
2. Add the "shebang" at the top to tell the system this is a bash script: `#!/bin/bash`
3. Add some commands, for example:

#!/bin/bash
# A simple script to update the server and report disk space.
echo "--- Starting Server Update ---"
apt update && apt upgrade -y
echo ""
echo "--- Current Disk Space ---"
df -h
echo ""
echo "--- Script Finished ---"

Making the Script Executable

Before you can run it, you must make the script executable:

chmod +x myscript.sh

Running the Script

./myscript.sh