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makeself.sh is a small shell script that generates a self-extractable tar.gz archive from a directory. The resulting file appears as a shell script (many of those have a .run suffix), and can be launched as is. The archive will then uncompress itself to a temporary directory and an optional arbitrary command will be executed (for example an installation script). This is pretty similar to archives generated with WinZip Self-Extractor in the Windows world. Makeself archives also include checksums for integrity self-validation (CRC and/or MD5 checksums).

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Adding a binary payload to a shell script could, for instance, be used to create a single file shell script that installs your entire software package which could be composed of hundreds of files. You merely append the tar or gzip file of your package as

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Most modern Unix-based operating systems (e.g. Linux, MacOS X, and BSD) come with a little console-mode utility called GNU Screen. It's a powerful tool in the hands of the console warrior, a veritable Swiss Army knife of text-mode human-computer interacti

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The make man pages don’t do justice to it when they describe it as a utility to “maintain groups of programs”. That’s like describing a Swiss-army knife as a paperweight that’s also a functional letter opener. Technical documentation - being what it is -

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ou already know how to make an encrypted disk image with Disk Utility, but you can also script out this action at the command line.

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Bash acquired in-process regular expressions in version 3.0, but I never noticed, probably because most of the machines I'm using are Bash 2.05b. As I'm not necessarily in a position to upgrade any old box I happen to be working on, I tend to stick to the

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