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A collection of 75+ free Linux tutorials

Free Unix and Linux tutorials: Wow, this blog post makes me feel a little old. As I've been working on reorganizing the website lately, I found that I've written more than seventy-five Unix and Linux tutorials. To try to make them easier to find, I created this page to link most of them up.

So, to that end, here is a list of at least 75 free Unix and Linux tutorials I've written. I hope you enjoy them, and I hope they're helpful.

By Alvin Alexander on November 15, 2011

The Linux top command

Linux top command FAQ: Is there a utility to show Linux processes interactively, like the Unix/Linux ps command, but more like a GUI ro character-based interactive tool?

By Alvin Alexander on August 31, 2011

The Unix and Linux ps command

Unix/Linux processes FAQ: Can you share some examples of the Linux ps command? (Or, how do I use the Linux ps command?)

The basic ps command

If you run the Linux ps command by itself, it only shows very basic information about the processes you are currently running. For example, if you issue the basic command like this without any arguments:

ps

you'll see output from this command looks something like this:

By Alvin Alexander on August 31, 2011

Linux free memory - how to show the free memory on a Linux system

How do I show the free memory on a Linux system?

You can show free memory on a Linux system with the free command, like this:

free

That command returns results like this:

            total       used       free     shared    buffers     cached
Mem:       8145044    8097552      47492          0      74252    1189464
-/+ buffers/cache:    6833836    1311208
Swap:     12578884    6205424    6373460

If you prefer to see information in MB you can use the -m parameter, like this:

By Alvin Alexander on August 8, 2011

JBuilder Open Tools - Some of the best JBuilder "Open Tools"?

JBuilder Open Tools question: Can you tell me some of the best JBuilder Open Tools?

Sure. From the Borland Conference 2001, here is a list of the Top-10 Open Tools for JBuilder:

By Alvin Alexander on September 14, 2009