Use Spotlight to speed up grep searches
Hg Init: a Mercurial tutorial
ack – a grep replacing search tool
IBM developerWorks: Learn 10 good UNIX usage habits
Ten efficient and maybe non-obvious but simple ways to improve one’s command-line usage patterns.
10 essential tricks for admins
Create a tar.gz archive of a directory while preserving permissions of files and sub-directories
tar -pczf name_of_your_archive.tar.gz /path/to/directory
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