What is a shell script?

Shell scripts are text files containing a series of commands that are executed by a Unix or Linux shell, such as Bash, Zsh, or Sh. They automate repetitive tasks, manage system operations, and can combine multiple commands into a single executable program. Shell scripts are commonly used for system administration, data processing, and application deployment, making them a powerful tool for developers and IT professionals. By using shell scripts, users can save time and reduce errors in complex workflows.