cut

Remove sections from each line of files

Opt Long Option Description
-c list –characters=list Extract the portion of the line defined by list.
The list may consist of one or more comma-separated numerical ranges.
-f list –fields=list Extract one or more fields from the line as defined by list
-d delim –delimeter=delim When -f is specified, use delim as the field delimiting char
–complement Extract the entire line except portions specified by -c and/or -f

cut Selection Options

Example: cut -d ':' -f 1 /etc/passwd | head