tech tip

By combining three useful command-line too

Geek Ride: "Everyone is not as lucky as having a full fletched email client like thunderbird or kmail to send mails.

There is one unlucky group known as system administrators who have to send the mails either through the command line or a script running on the remote server."

When grep and sed aren't enough, gawk may provide the extra horsepower that yo

There are many dialog programs out there, Zenity, Kdialog, xdialog, etc. I love programs like these. They make it so easy to spice up a shell script with a little GUI action.

Today I'm going to go look at a dialog program called gxmessage.

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We often read (including in the book Advanced Bash-Scripting Guide by Mendel Cooper) that if we pass variable names as parameters to functions, they will be treated as string literals and cannot be dereferenced (ie the value is not available).

But this is not so, variable names can be passed as parameters to functions and they can be dereferenced to obtain the value of the variable with the given name.

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By changing your Xsession file you can start a kiosk-style machine that starts a single X11 application.

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Ever wanted to get the MAC or IP address of your computer in a Linux shell script? The following two commands should work on most flavours of Linux/Unix.

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This tech tip provides you with information on how to customize your motd (Message Of The Day) message to display the output of one or more scripts.

This uses the update-motd package, which updates the motd message when run. I use this method on Ubuntu 9.10, but not all systems provide this package so extra effort may be required to use it on other systems.

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I wanted to store geolocation information in the photos I take with my digital camera. That way I wouldn't have to specify the photo locations manually when I upload them to the Picasa webpage.

Since my camera doesn't have built in GPS support, I wrote this script to add the location information to the pictures when they are on the computer already.

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In the vast world of communication, instant messaging is a long-standing medium. Facebook has entered the scene relatively recently, as has Twitter.

If you use these newer mediums of communication and you're a Pidgin user then you may want to look at the Pidgin plugins for accessing them.

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