I have written about the FSF facing DDoS attacks several times, including on doing our part to clean up the internet and on Uptime Kuma, as well as "Defending Savannah from DDoS attacks". But I ...

If you use Windows today and type ls, cat, grep, or awk in a terminal, there is a good chance something useful will happen. That was not always true. For most of the history of personal computing, ...

grep finds lines. cut extracts fields. sort and uniq count and rank. sed edits. awk does all of that, and it does it with logic. Every tool covered so far in this series does one thing well. awk does ...

Sed is a non-interactive text editor that operates on piped input or text files. By providing it with instructions, you can make it modify and process text in files or streams. The most common use ...

The netstat command can display an overwhelming amount of network statistics. Ready to make your focus a little easier with a series of aliases? What kind of stats does the netstat -s command provide?

There are number of ways to join multiple lines of text and change delimiters if needed. This article shows two of the easier ways to do this and explains the commands. The paste command was developed ...

Your CSV file may be generated from a database, an API, or you might have run some commands and converted the output to delimit in CSV format. In any of the cases, you have to first analyze the ...