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How to Use the join command on Linux

If you want to merge data from two text files by matching a common field, you can use the Linux join command. It adds a sprinkle of dynamism to your static data files. We’ll show you how to use it....

How to Use netstat on Linux

The Linux netstat command gives you a treasure-trove of information about your network connections, the ports that are in use, and the processes using them. Learn how to use it.

How to Use the uniq Command on Linux

The Linux uniq command whips through your text files looking for unique or duplicate lines. In this guide, we cover its versatility and features, as well as how you can make the most of this nifty utility....

How to Use the grep Command on Linux

The Linux grep command is a string and pattern matching utility that displays matching lines from multiple files. It also works with piped output from other commands. We show you how.

How to Use the history Command on Linux

Linux’s shell saves a history of the commands you run, and you can search it to repeat commands you’ve run in the past. Once you understand the Linux history command and how to use it, it can significantly boost y...

How to Create a Swap File on Linux

Add swap space to a Linux computer, or increase the swap space that’s already present, without messing about with partitions. We show you the easy way to tailor your swap space.

How to Use the stat Command on Linux

The Linux stat command shows you much more detail than ls does. Take a peek behind the curtain with this informative and configurable utility. We’ll show you how to use it.

How to Use the which Command on Linux

The Linux which command identifies the executable binary that launches when you issue a command to the shell. If you have different versions of the same program on your computer, you can use which to find out which one the sh...

How to Use the dmesg Command on Linux

The dmesg command lets you peer into the hidden world of the Linux startup processes. Review and monitor hardware device and driver messages from the kernel’s own ring buffer with “the fault finder’s friend...
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