Unix utility SED provides an effective and versatile way of deleting one or more lines from a designated file to match the needs of the user. This Unix command is used for command line processing.

The first command we’ll examine in this post is a very unusual awk command that systematically removes every line in the file that is encountered more than once. It leaves the first instance of the ...

Web site Hackaddict.net demonstrates how to remove the contents of a plain text file on Windows, Linux, and Mac without manually deleting the file and recreating it. This can be done by copying the ...