Automate Tasks Using Bash Scripts

What Is a Bash Script?

A Bash script is a file that contains Linux commands that run automatically.

Instead of typing the same commands repeatedly, you can save them inside a script and execute everything with one command.

Bash scripts are useful for:

• Automating tasks
• Running backups
• Cleaning files
• Starting tools
• Saving time

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Create Your First Script

Create a new file:

nano hello.sh

Add this:

#!/bin/bash

echo "Hello from Termux"

Save the file.

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Make the Script Executable

Run:

chmod +x hello.sh

This gives execution permission.

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Run the Script

Execute the script:

./hello.sh

Output:

Hello from Termux

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Example: Update Termux Automatically

Create a script:

nano update.sh

Add:

#!/bin/bash

pkg update -y && pkg upgrade -y
echo "System Updated"

Save and make it executable:

chmod +x update.sh

Run it:

./update.sh

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Example: Backup a Folder

Create a backup script:

nano backup.sh

Add:

#!/bin/bash

cp -r /storage/emulated/0/Documents /storage/emulated/0/Backup
echo "Backup Completed"

Run:

chmod +x backup.sh
./backup.sh

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Useful Bash Commands

Print text:

echo "Hello"

Pause script:

sleep 5

Create folder:

mkdir test

Delete file:

rm file.txt

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Run Scripts From Anywhere

Move scripts to:

~/bin

Example:

mkdir -p ~/bin
mv hello.sh ~/bin

Now you can run:

hello.sh

from anywhere.

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Common Error

Permission Denied

Fix it with:

chmod +x script.sh

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Final Thoughts

Bash scripting is one of the best ways to automate tasks in Termux.

Start with small scripts, then slowly build more advanced automation workflows as you learn Linux commands.