The following options are recognized:
Suppress the default output; sed displays only those lines specified with the p command or with the p flag of the s command.
Next argument is an editing command. Necessary if multiple scripts or commands are specified.
Next argument is a file containing editing commands.
If the first line of the script is #n, sed behaves as if -n had been specified.
Multiple -e and -f options may be provided, and they may be mixed. The final script consists of the concatenation of all the script and file arguments.