Cron Only Email Errors | To have your trusty cron job only email errors, simply add this designation to the end of your cron entry: >/dev/null Example: */30 * * * * /usr/local/bin/myscript.pl >/dev/null Optional more geeky details: There are two different kinds of output from any given command. “>” is the same as issuing “1>” which is the non-error
Install Ubuntu Linux on Chrome Cr-48 | Check out this excellent project which has scripted the process of getting Ubuntu onto your CR-48: http://cr-48-ubuntu.googlecode.com If you are up to more hacking, several have taken a leaked standard bios to then flash the CR-48 into a regular laptop.
Quick Hping How-To | hping is an excellent networking tool that can be used to send a crafted packet over a specific port to test firewall settings. In this example, I’ll show you how to do quick firewall port testing using hping3. First, install hping! Ubuntu has the latest hping3: sudo apt-get install hping3 Ok, now let’s send a
Quick Preview of GIMP 2.8 | GIMP 2.8 is not far away on the horizon. I snatched a recent build from this excellent PPA to give it a spin. For some background, here are the release notes and open bugs. The main answer everyone wants to know: Yes GIMP 2.8 image processing is still 8 bit, though with GEGL 16 or
Roku Open Ports | Being the hackery-type that I am, I have been poking at my newly purchased Roku HD. It turns out there are four ports open on the Roku. 8080, 8085, 8086, and 8087. After different attempts, the only fun I could come to is that you can telnet to your Roku on port 8080. The other
Extra Gimp Packages You Should Install | If you use the GIMP, you should also install these packages which are available in the Ubuntu repositories to provide more plugins and editing features for your gimp-fu. sudo apt-get install gimp-data-extras gimp-dcraw gimp-resynthesizer gimp-plugin-registry gimp-texturize Below are the copy / pasted descriptions with some brief details about each. gimp-data-extras This package contains extra brushes,
Use du command to see file and folder sizes | How can I see the size of files and folders from the command line? Use the command du to quickly list sizes! A command I like to use is: du -hsc * This will provide a listing of file and folder sizes from your current working directory, including a total size amount at the bottom.
Fix Drupal Upload Progress | Drupal and other software can take advantage of a nice upload progress bar. Here is how to get that working on CentOS. You may have seen this in Drupal. Let’s fix it! First, in CentOS 5 install these packages: yum install php-pear gcc make php-devel Next as root, issue: pecl install uploadprogress Once that completes,