sed

Usage: sed [OPTION]... SCRIPT [FILE]...

Allowed sed scripts come in the following form:

		ADDR [!] COMMAND
		

ADDR can be:

			NUMBER    Match specified line number
			$         Match last line
			/REGEXP/  Match specified regexp
		

! inverts the meaning of the match

COMMAND can be:

			s/regexp/replacement/[igp]
				which attempt to match regexp against the pattern space
				and if successful replaces the matched portion with replacement.
			aTEXT
				which appends TEXT after the pattern space
		

This version of sed matches full regular expressions.

Options:

			-e	Add the script to the commands to be executed
			-n	Suppress automatic printing of pattern space
		

Example:

			$ echo "foo" | sed -e 's/f[a-zA-Z]o/bar/g'
			bar