The convert command from the ImageMagick suite of tools provides ways to make all sorts of changes to image files. Among these is an option to change the resolution of images. The syntax is simple ...

There's a lot to learn about image files on the command line, from verifying file format to finding out where and when photos were taken and maybe even getting an unusual view of what they look like.

The Linux command line can seem impenetrable, with arcane instructions and a focus on text interfaces. Fortunately, there are ...

Us geeks mostly think of the command line as the best place for text manipulation. It's a natural with cat, grep and shell scripts. But although you can't necessarily view your results from within a ...

Tools, Tips, and Tweaks Manipulating XML at the command line with xmlstarlet. In the world of open-source software, where open data formats are a necessity, XML is poised to become the de facto ...

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