commandlinefu.com is the place to record those command-line gems that you return to again and again.
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This will recursively add files/directories in SVN.
Notice: It might not work properly, and not all files could get added.
Since there is a limit on characters, I couldn't add failure/success notices.
If you want failure/success notices, download Terminal Enhancements (http://tenhancements.tk/ )
It is included on Base Features
Good for summing the numbers embedded in text - a food journal entry for example with calories listed per food where you want the total calories. Use this to monitor and keep a total on anything that ouputs numbers.