"regular expressions" tag
Grep me out!

A Beginner’s Guide to Grep: Basics and Regular Expressions

Grep is one among the system administrator’s “Swiss Army knife” set of tools, and is extremely useful to search for strings and patterns in a group of files, or even sub-folders. This article…

Awk time

Advanced Awk for Sysadmins

In this article, we will discuss advanced Awk functionality, including string- and time-manipulation functions, associative arrays and user-defined functions. These can be very useful for a systems administrator to quickly summarise and analyse…

Sed Explained

Sed Explained, Part 1

UNIX-like operating systems have numerous powerful utilities accessible via the command-line and shell-scripting, which are flexible enough to operate in a variety of problematic domains. Text processing is one of these. Among the…

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