Backup automation script in Bash Scripting - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main purpose of a backup automation script?

To automatically copy important files or folders to a safe location regularly, so data is protected against loss.

beginner

In a bash backup script, what command is commonly used to copy files and directories?

The rsync command is commonly used because it efficiently copies and synchronizes files and directories.

intermediate

Why is it important to check if the backup destination directory exists in a script?

To avoid errors during backup, the script should check if the destination folder exists and create it if it does not.

intermediate

What does the following bash snippet do? <br>

if [ ! -d "$backup_dir" ]; then mkdir -p "$backup_dir"; fi

It checks if the directory stored in $backup_dir does not exist, and if so, creates it including any needed parent directories.

beginner

How can you schedule a backup automation script to run daily on a Linux system?

You can use cron to schedule the script. Adding a cron job with crontab -e lets you run the script at set times automatically.

Which command is best for syncing files in a backup script?

A rsync

B cat

C echo

D grep

rsync efficiently copies and syncs files, making it ideal for backups.

What does the -p option do in mkdir -p?

A Creates parent directories as needed

B Prints the directory path

C Prompts before creating

D Protects the directory

-p creates parent directories if they don't exist, preventing errors.

Why should a backup script check if the destination folder exists?

A To encrypt files

B To delete old backups

C To speed up the script

D To avoid errors during file copying

Checking prevents errors if the folder is missing, ensuring backup success.

Which tool schedules scripts to run automatically on Linux?

A tar

B cron

C ssh

D vim

cron runs scripts at scheduled times automatically.

What is a safe place to store backup files?

A Temporary system folder

B Same folder as original files

C Separate drive or external storage

D Desktop

Storing backups on a separate drive protects data if the main drive fails.

Explain how a simple bash backup automation script works.

Think about the steps to safely copy files regularly.

Describe how to schedule a backup script to run every day at 2 AM using cron.

Focus on the cron time format and command.