Backup of files in Linux using command line

In IT or our day-to-day computer industry activities, taking backup is one of the most important activities. Previously, offices were required to keep important paper in a safe place; but if a fire breaks out, then everything is finished. In the digital world, taking...

Using awk in Linux

awk is a program that has its own programming language for performing data-processing and generating reports. The GNU version of awk is gawk. awk processes data, which can be received from a standard input, input file, or as the output of any other command or process....

sed – non-interactive stream editor uses in Linux

The stream editor (sed) is a very popular non-interactive stream editor. Normally, whenever we edit files using the vi editor, we need to open the file using the vi command, then we interact with the file to see the content of the file on screen, then edit it, and...

The basics of regular expressions in Linux script

A sequence of characters that have certain patterns of text (with meta-characters) that are searched for in a larger text file are called regular expressions: $ ll /proc | grep cpuinfo In the preceding command, the grep utility will search for the cpuinfo text in all...