Module 2. Shell Usage and Fundamental Commands

Duration: 6 hours

This module focuses on building fluency with the command line, which is essential for any system administrator.

Topics Covered

This module is divided into the following detailed sections:

2.1 File Navigation and Management

• Commands: ls, cd, pwd.
• Managing files: cp, mv, rm, mkdir.

2.2 Text Editing with Vim

• Understanding Modes (Normal, Insert, Command).
• Basic editing, saving, and quitting.

2.3 Pipes, Redirections, and Filters

• Redirecting Output (>, >>, |).
• Filtering text streams: grep, cat, less, sort, wc.

2.4 Permission Management

• Understanding rwx permissions.
• Using chmod (symbolic and octal) and chown.

2.5 Process Control

• Monitoring: top, ps.
• Signals: kill vs kill -9.
• Background jobs (&) and job control.