$ ls

Flags, ordered by personal usefulness

• -l: List directory contents, one element per line
• -a: List all of the directory contents, including those starting with '.' (hidden files)
• -h: Print human readable data sizes
• Sorting Order:
• -r: Reverse sorting order
• -t: Sort by time, newest first
• -S: Sort by file size, largest first
• -X: Sort by extensions
• -R: List subdirectories recursively (tree is prettier)
• -U: Don't sort. Makes listing lots of files a lot faster