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The original command doesn't work for me - does something weird with sed (-r) and xargs (-i) with underscores all over...
This one works in OSX Lion. I haven't tested it anywhere else, but if you have bash, gpg and perl, it should work.
It's hard to beat C. This is just slightly faster than the bc version on my machine.
Requirements: libgmp headers, gcc.
There was another line that was dependent on having un-named screen sessions. This just wouldn't do. This one works no matter what the name is. A possible improvement would be removing the perl dependence, but that doesn't effect me.
Basically an improvement on an earlier ethtool command line.
Reconfigures time zone in Ubuntu, which I cannot figure out how to do through the GUI. Worked like a charm to set my time zone to CEST from EDT.
Ever since the switch to pulseaudio, Ubuntu users including myself have found themselves with no sound intermittently. To fix this, just use this command and restarts firefox or mplayer or whatever.