Applications

The sed (Stream EDitor) command in Bash/Linux reads text from a stream or file and performs line-by-line operations on it based on a set of supplied criteria.  Here’s how to use it. sed is an automated way to process text. One simple example of where sed can be used is doing a simple find-and-replace for a word in a text document – the text with the words replaced can then be saved to a new file or overwrite the original. Why? Being able to modify text – either from a … Read more

This guide explains how to use the tar command in Linux to extract files archived in the .tar.gz format. Many open-source packages for Linux are supplied for download in the .tar.gz archive format. .tar.gz archives behave much like .zip archives you might be more familiar with in that they contain and compress multiple files into a single archive file. The .tar.gz archive looks a bit different from other files – it appears to have two file extensions. This is because it’s the combination of two processes. tar (Tape ARchive) is a format for … Read more