Bash Scripting:

Bash scripting is a way to automate tasks on Linux systems using the Bash shell, a command-line interface (CLI) that runs on most Unix and Linux systems. Bash scripts are made up of commands and instructions that are executed by the Bash shell, and can be used for everything from system administration to programming.

For Linux users, learning some essential Bash scripts can save a lot of time and make working with the command line more efficient. Here are the 10 most popular must-know Bash scripts for Linux users.

  1. Hello World: The first script most developers learn is the "Hello World" script. This simple script prints the text "Hello World" to the console.
    #!/bin/bash  echo "Hello World"
  2. Create a Directory: This script creates a new directory in the current working directory.
    #!/bin/bash   mkdir mydirectory
  3. Rename Files: This script renames all files in the current directory with a specific extension to a new extension.
    #!/bin/bash
    for file in *.txt; do
    mv "$file" "${file%.txt}.new"
    done
  4. Delete Files: This script deletes all files in the current directory with a specific extension.
    #!/bin/bash
    rm *.txt
  5. Count Lines in a File: This script counts the number of lines in a file.
    #!/bin/bash wc -l myfile.txt
  6. Print System Information: This script prints information about the system, such as the kernel version, CPU type, and memory usage.
    #!/bin/bash
    uname -a
    cat /proc/cpuinfo
    free -h
  7. Monitor Log Files: This script monitors log files in real-time and displays any new entries as they are added.
    #!/bin/bash tail -f /var/log/syslog
  8. Backup Files: This script creates a backup of all files in the current directory with a specific extension.
    #!/bin/bash tar -cvzf backup.tar.gz *.txt
  9. Search for a File: This script searches for a file in the current directory and its subdirectories.
    #!/bin/bash find . -name myfile.txt
  10. Install a Package: This script installs a package using the package manager.
    #!/bin/bash sudo apt-get install package-name

    In conclusion, Bash scripting is a powerful tool that Linux users can use to automate tasks and make their work more efficient. The above-mentioned Bash scripts are just a few examples of the many ways in which Bash scripting can be used to simplify and streamline everyday tasks. Learning these scripts is a great way to get started with Bash scripting and become more productive on Linux systems.