Linux stuff

Common Commands with examples

These commands and their usage are used for both the LinuC Level 1 Exam 101 and Exam 102. Using these commands in various scenarios to become proficient in basic command-line tasks, file management, and system administration.

ls - List directory contents

The ls command is used to list files and directories in a specified location. It has many options to customize the output.

Examples:

• ls -l: Long listing format, showing permissions, owner, size, and modification date
• ls -a: Show all files, including hidden ones (those starting with a dot)
• ls -R: Recursively list subdirectories
• ls -lh: Use human-readable file sizes (e.g., 1K, 234M, 2G)
• ls /etc: List contents of the /etc directory

cd - Change directory

cd is used to navigate the file system. It can use absolute or relative paths.

Examples:

• cd /home/user: Change to the /home/user directory (absolute path)
• cd ..: Move up one directory level
• cd -: Return to the previous directory
• cd ~: Change to the user's home directory
• cd Documents/Projects: Change to a subdirectory (relative path)