Ls
From Leechfinger
"ls" is the list directory command, below are some of the flags we normally use.
Show only directories
$ ls -d */
Don't show group and owner
$ ls -lgo
Newest files first
$ ls -lt
File size and sort
$ ls -sSh
Show modification time
$ ls -lgot --time-style=long-iso
Sorting files by extension/version
$ ls -lgo --sort=extension
// or sort by version
$ ls -lgo --sort=version