ls.md

ls

The ls command in Linux is used to list the contents of a directory. It provides information about files and directories, such as their names, sizes, permissions, and modification dates.

Basic Syntax

ls [options] [file|directory...]

Common Usage

List Files in the Current Directory

ls

List Files with Detailed Information

ls -l

This command lists files and directories in long format, showing detailed information such as permissions, number of links, owner, group, size, and modification date.

List All Files Including Hidden Files

ls -a

This command lists all files, including hidden files (those starting with a dot .).

List Files with Human-Readable File Sizes

ls -lh

This command lists files with detailed information and displays file sizes in a human-readable format (e.g., K, M, G for kilobytes, megabytes, gigabytes).

Combining Options

ls -alh

This command lists all files, including hidden ones, with detailed information and human-readable file sizes.

Key Options

• -l: Use a long listing format.
• -a: Include directory entries whose names begin with a dot (hidden files).
• -h: With -l, print sizes in human-readable format (e.g., 1K, 234M, 2G).
• -t: Sort by modification time, newest first.
• -R: List subdirectories recursively.
• -S: Sort by file size, largest first.
• -r: Reverse the order of the sort.