The awk command can make it easy to remove duplicate characters from a string even when those characters aren’t sequential, especially when the process is turned into a script. First, the awk command ...

"Unix experience" implies you know how to get stuff done using tools common to most Unix-likes, like sed, grep and awk covered in this article. If you grok the contents of this article, you'd be able ...

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 ...

The purpose of this article is to demonstrate that real programs can be and are written using the AWK programming language. When I first started working with UNIX, going back 10 years now, no one I ...

The awk command is a versatile text-processing tool in Linux. It filters and manipulates files using patterns, conditions, and actions. It supports a wide range of scenarios, making it straightforward ...

In an earlier article ("GNU Awk 4.0: Teaching an Old Bird Some New Tricks", published in the September 2011 issue of Linux Journal), I gave a brief history of awk and gawk and provided a high-level ...

We aren’t doing the next generation of Linux and Unix admins any favors by forgetting init scripts and fundamental tools I happened across a post on Reddit by chance, asking about textfile ...

I love chaining commands as much as anyone, and sed, awk, grep, and perl are some of my best friends. However, remember that, in *nix, each command runs in its own process, the resources required for ...