List all “regular” files (not starting with .) in the current directory:ls
Display a long listing:ls -l
List all the files in the current directory, including “hidden” ones (starting with .): ls -a
List by time (most recent files first): ls -t
List by size (biggest files first): ls -S
List with a reverse sort order: ls -r
Long list with most recent files last: ls -ltr