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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10
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Displays all information about your battery. for just capacity, try replacing cat with
grep -F capacity:
Battery number might be BAT0 instead of BAT1. Just run
cd /proc/acpi/battery; ls
and find out what folder is in that directory and replace that name with BAT1
There is 1 alternative - vote for the best!
If you can do better, submit your command here.
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This also assumes you have the proc filesystem, which is only found on Linux and AIX machines. Not very portable.