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By Xah Lee. Date: 2010-08-30. Last updated: 2023-04-26. There are a lot of keyboard layouts today. There's your standard QWERTY, and there's the more efficient Dvorak. That's good enough, right? No. Apparently, a lot people are making a lot layouts. Some are specialized on a particular language (For example, German, Spanish), some aim for easier transition from QWERTY, some are designed for progra

By Xah Lee. Date: 2002-02-28. Last updated: 2022-01-01. A Lambda Logo Tour (and why LISP languages using λ as logo should not be looked upon kindly) Dear lispers, The lambda character λ, always struck a awe in me, as with other mathematical symbols. In my mind, i imagine that those obscure math symbolism are etched in stone by god. A salient example is the book cover Concrete Mathematics by Ronald

By Xah Lee. Date: 2007-03-30. Last updated: 2023-01-23. This page shows you how to do common image editing tasks using the command line software ImageMagick. for faster alternative, see GraphicsMagick Tutorial find version magick --version jpg png Conversion gif to png magick convert p1.gif p2.png png to jpg magick convert -quality 90% old.png new.jpg You can also convert to gif, tiff and other im

By David Barr. Background This is one system administrator's point of view why LD_LIBRARY_PATH, as frequently used, is bad. This is written from a SunOS 4.x/5.x (and to some extent Linux) point of view, but this also applies to most other UNIXes. What LD_LIBRARY_PATH does LD_LIBRARY_PATH is an environment variable you set to give the run-time shared library loader (ld.so) an extra set of directori

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