10.2 Command-Line Syntax
The syntax for invoking sed has two forms:
sed [-n] [-e] 'command ' file(s) sed [-n] -f scriptfile file(s)
The first form allows you to specify an editing command on the command line, surrounded by single quotes. The second form allows you to specify a scriptfile , a file containing sed commands. Both forms may be used together, and they may be used multiple times. If no file(s) are specified, sed reads from standard input.
The following options are recognized:
If the first line of the script is