More people than ever are using wireless networks as their primary networking medium. Great programs are available under X11 that give users a graphical interface to their wireless cards. Both GNOME and KDE include network management utilities, and a desktop-environment-agnostic utility called wicd also offers great functionality.

If you've used the command line much at all you know about I/O redirection for redirecting input to and/or output from a program. What you don't see all that often or that you may not be familiar with is redirecting I/O inside a bash script. And I'm not talking about redirections that you use when your script executes another command, I'm talking about redirecting your script's I/O once it has already started executing.

The bash man page has long had the following bug listed: "It's too big and too slow" (at the very bottom of the man page). If you agree with that, then you probably won't want to read about the "new" associative arrays that were added in version 4.0 of bash. On the other hand, if you've ever used any modern Office Suite and seen code-bloat at its finest and just think the bash folks are exaggerating a bit, then read on.

To see the interrupts occurring on your system, run the command:

Queries are the database equivalent of filters in a spreadsheet. Just as a filter can limit and reorganize the information displayed in a spreadsheet, so a query limits and reorganizes the information in a database. Either can be an efficient way of finding the information you want, especially when you're dealing with thousands of records.

If you have ever had a hard drive fail on a remote server you may remember the feeling you had after trying to issue the following commands:

I've recently written about using bash arrays and bash regular expressions, so here's a more useful example of using them to test IP addresses for validity.

If you've been an Open Source advocate for any significant amount of time, you've no doubt heard someone say, with a sneer in their voice, "You get what you pay for". Let it be noted, I really hate that cliche. It does make me think, however, about what you really get when you purchase the license to use a commercial operating system like Windows or OSX.

This article delves into the use of these tools, providing insights and detailed instructions to help you efficiently compress and decompress files in a Linux environment.