You can invoke sed in three ways: by typing the commands on the command line; by inserting sed commands in a script file then calling sed; or by inserting sed commands in a script file and making the script executable.
To use sed from the command line for one-liners use:
sed [options] 'sed-commands' input-file(s)
Remember when using sed commands on the command line to surround the actual commands with single quotes, although sed will tolerate double quotes.
To use a sed script file use this format:
sed [ options] -f sed-script-file input-file(s)
To use a sed script file that has the sed command interpreter line as the first line of the script file use this format:
sed-script-file [options] input-file(s)
Whether you are running ...