ubuntu 204 ls详细信息

The "ls" command in Ubuntu 20.04 is used to list the files and directories in a directory. Here are the detailed options and information for the "ls" command:

Usage: ls [OPTION]... [FILE]...

Options:

• a : Display all files, including hidden files starting with "."
• l : Use a long listing format, showing file permissions, ownership, size, and modification time
• h : When used with the "l" option, display file sizes in human-readable format (e.g., 1K, 234M, 2G)
• r : Reverse the order of the output
• t : Sort files by modification time, with the newest files first
• R : Recursively list all files and directories in subdirectories
• u : Use file access time instead of modification time for sorting
• S : Sort files by size, with the largest files first

Examples:

• ls : Lists the files and directories in the current directory
• ls -l : Lists files in long format
• ls -a : Lists all files, including hidden files
• ls -lh : Lists files in long format with human-readable file sizes
• ls -t : Lists files sorted by modification time, with the newest first
• ls -R : Lists files and directories recursively
• ls -lS : Lists files in long format sorted by size, with the largest firs