It’s fast, it’s powerful, and its very name suggests that it does something technical: grep. With this workhorse of the command line, you can quickly find text hidden in your files. Understanding grep ...

grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Created in the early days of Unix, it has become a cornerstone of text processing in Linux ...

The setup: I have a directory. In this directory is a series of subdirectories. In each subdirectory are four or five text files. The files are all named identically from directory to directory; i.e.

One of the best things about Linux is that it offers several ways of handling every task. Everything you do in Linux will have an alternative method, from the simplest to the most complex. But don't ...

As a relatively isolated junior sysadmin, I remember seeing answers on Experts Exchange and later Stack Exchange that baffled me. Authors and commenters might chain 10 commands together with pipes and ...