GNU Bash

GNU Bash (Bourne Again Shell) is a widely used command-line shell and scripting language for Unix and Linux systems. It serves as the default shell on most Linux distributions and provides a powerful environment for command execution, automation, and system administration.

Features of GNU Bash:

• Provides an interactive command-line interface for executing system commands.
• Supports powerful scripting capabilities for task automation and system management.
• Includes features such as command history, tab completion, and job control.
• Enables environment variable management and shell customization.
• Supports control structures like loops, conditionals, and functions.
• Widely compatible across Linux and Unix-based operating systems.

GNU Bash Usage

$ sudo su
$ bash --version        # Check GNU Bash version
$ echo $BASH_VERSION    # Display Bash version from environment
$ ps                    # View running processes
$ exit                  # Exit the shell