shell-scripts

Shell scripts (e.g., Bash, Zsh) are executable text files containing a sequenced list of commands for the OS command-line interpreter: they automate repetitive system administration and data processing tasks.

Shell scripts are the core automation engine for Unix-like systems: consider them a powerful, flexible interface to the operating system kernel. They consolidate complex workflows—often 50 or more commands—into a single, executable file, eliminating manual error. Scripts chain together essential Linux utilities (like `grep`, `awk`, and `sed`) using pipes to manipulate data streams and files with high efficiency. We use them daily for critical tasks: automated nightly backups, system health monitoring via cron jobs, and orchestrating complex DevOps pipelines. Mastering shell scripting is non-negotiable for efficient system management and reliable infrastructure operations.

https://tldp.org/LDP/abs/html/index.html