ls - List contents of directory

This is a utility that lists the contents of a given directory, or multiple
directories.

Usage: ls [-?alrstxzAR1] [path1...] [path2...]

Flags:
    -?  HELP... print USAGE
    -a  List all files, including hidden and system files, ".", and ".."
    -l  Long listing form (extra information)
    -r  Reverse order of sorting
    -s  Display size of each file in kilobytes, and total for each directory
    -t  Sort by time/date (latest first)
    -x  Sort by extension
    -z  Sort by size
    -A  List all files except "." and ".."
    -R  List subdirectories recursively
    -1  Display 1 entry per line of short form