In this chapter, we will cover the following topics:
- Gathering information about processes
- What's what – which, whereis, whatis, and file
- Killing processes, and sending and responding to signals
- Sending messages to user terminals
- The /proc filesystem
- Gathering system information
- Scheduling with a cron
- Database styles and uses
- Writing and reading SQLite databases
- Writing and reading a MySQL database from Bash
- User administration scripts
- Bulk image resizing and format conversion
- Taking screenshots from the terminal
- Managing multiple terminals from one
