This document provides an introduction to file and directory management, permissions, and input/output redirection for the RHCSA exam. It lists common Linux commands for viewing, copying, moving, renaming, deleting, and creating files and directories. It also covers changing file attributes like permissions and ownership using commands like chmod, chown, and umask. Finally, it mentions regular expressions and input/output redirection topics covered by the RHCSA.

1. Introduction to
RHCSA

2. File and Directory Management
• ls Displays the contents of a directory
• cp Copies files or directories from one location to
another
• mv Moves or renames files and directories
• cd Changes the current location
• rm Deletes files or directories
2

3. • pwd Shows the present working directory
• file Displays the type of a file
• head Displays the beginning of a file
• tail Displays the end of a file
• touch Creates empty files
• mkdir Creates a directory
3

4. File Permission Basics
• chmod Changes the permissions of files or directories
• chown Changes the owner and group of files or directories
• ls –l Displays file permissions and ownership of files or directories
• ll Same as ls -l
• umask Defines or displays the default permissions for creation of files or directories
4

5. • User Person who owns the file
• Group Group that owns the file
• Other All other users on the system
5

6. Regex
6

7. I/O Redirection
7