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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
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Commands tagged built-in from sorted by
Terminal - Commands tagged built-in - 4 results
command >&-
<COMMAND> |:
2011-08-28 23:48:29
User: h3xx
25

This is shorter and actually much faster than >/dev/null (see sample output for timings)

Plus, it looks like a disappointed face emoticon.

TIME=$( { time YOUR_COMMAND_HERE; } 2>&1 ) ; echo $TIME
2010-11-18 15:48:05
User: allrightname
Functions: echo time
1

I've had a horrible time trying to pipe the output of some shell built-ins like 'time' to other programs. The built-in doesn't output to stdout or stderr most of the time but using the above will let you pipe the output to something else.

for p in ${PATH//:/ }; do [[ -d $p && -x $p ]] && echo $p; done
2009-09-19 06:43:57
User: AskApache
Functions: echo
1

Finds executable and existing directories in your path that can be useful if migrating a profile script to another system. This is faster and smaller than any other method due to using only bash builtin commands.

See also:

+ http://www.commandlinefu.com/commands/view/743/list-all-execs-in-path-usefull-for-grepping-the-resulting-list

+ http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html