An /etc/hosts file that cleans up a significant amount of internet garbage. linux unix osx indow
A silly page that has lots of useful stuff about unix, infosec, hacking, it, scripts, permissions, regexp, CLI tools, and other geek stuff.
A utility that lets you edit disks and recover data, including entire partitions. Supports multiple operating systems.
A collection of hacker koans from Eric S. Raymond.
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