Commands tagged built-in sorted by votes

Commands tagged built-in (4)

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Fast, built-in pipe-based data sink

This is shorter and actually much faster than >/dev/null (see sample output for timings) Plus, it looks like a disappointed face emoticon. Show Sample Output
This is sample output - yours may be different.
```
# with >/dev/null:
$ time dd if=/dev/zero bs=1K count=100000 >/dev/null

100000+0 records in
100000+0 records out
102400000 bytes (102 MB) copied, 0.0355178 s, 2.9 GB/s

real    0m0.037s
user    0m0.011s
sys     0m0.025s

# with |:
$ time dd if=/dev/zero bs=1K count=100000 |:

real    0m0.002s
user    0m0.000s
sys     0m0.002s
```
22

<COMMAND> |:

h3xx · 2011-08-28 23:48:29 13
Show only existing executable dirs in PATH using only builtin bash commands

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 Show Sample Output
This is sample output - yours may be different.
```
~/askapache/bin
~/askapache/sbin
/bin
/etc
/sbin
/usr/X11R6/bin
/usr/bin
/usr/bin/mh
/usr/libexec
/usr/local/bin
/usr/sbin
/etc/X11
/etc/X11/xinit
~/askapache/ruby/bin
/usr/local/dh/apache/template/bin
/usr/local/dh/apache2/template/bin
/usr/local/dh/apache2/template/build
/usr/local/dh/apache2/template/sbin
/usr/local/dh/bin
/usr/local/dh/java/bin
/usr/local/dh/java/jre/bin
/usr/local/php5/bin
.
```
2

for p in ${PATH//:/ }; do [[ -d $p && -x $p ]] && echo $p; done

AskApache · 2009-09-19 06:43:57 1
Redirect bash built-in output to stdout

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. Show Sample Output
This is sample output - yours may be different.
```
$ TIME=$( { time host reddit.com; } 2>&1 ) ; echo $TIME
reddit.com has address 63.85.36.40 reddit.com has address 63.85.36.74 reddit.com mail is handled by 10 mail.reddit.com. real 0m0.201s user 0m0.001s sys 0m0.001s
```
1

TIME=$( { time YOUR_COMMAND_HERE; } 2>&1 ) ; echo $TIME

allrightname · 2010-11-18 15:48:05 0
Fast, built-in pipe-based data sink
This is sample output - yours may be different.
-2

command >&-

lhunath · 2011-08-30 13:52:09 2

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Show git log beautifully

Only show a short of important information inline ( include branch info ), and color this log tree.

Single words from Amazon Kindle 3 notes

You can use any dictionary you want, in any language. This command will output all single-word annotations that you have underlined in your Kindle device (provided the file) given a list of language-specific words. If you want to learn vocabulary, this command is ideal.

What is my ip?

Find Out My Linux Distribution Name and Version

Shows what processes need to be restarted after system upgrade

emerge,apt-get,yum... all update your system. This will at some point replace either a runtime dependency or a process (which is still running). This oneliner will list what processes need to be restarted

Find number of computers in domain, OU, etc .

Get the full path of a bash script's Git repository head.

Rather than complicated and fragile paths relative to a script like "../../other", this command will retrieve the full path of the file's repository head. Safe with spaces in directory names. Works within a symlinked directory. Broken down: $cd "$(dirname "${BASH_SOURCE[0]}")" temporarily changes directories within this expansion. Double quoted "$(dirname" and ")" with unquoted ${BASH_SOURCE[0]} allows spaces in the path. $git rev-parse --show-toplevel gets the full path of the repository head of the current working directory, which was temporarily changed by the "cd".

Fast command-line directory browsing

After typing cd directory [enter] ls [enter] so many times, I figured I'd try to make it into a function. I was surprised how smoothly I was able to integrate it into my work on the command line. Just use cdls as you would cd. It will automatically list the directory contents after you cd into the directory. To make the command always available, add it to your .bashrc file. Not quite monumental, but still pretty convenient.

dump a single table of a database to file

(Debian/Ubuntu) Discover what package a file belongs to

Works similar to dpkg -S, but uses the locatedb and is thus inarguably a lot faster - if the locatedb is current.

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Commands tagged built-in (4)

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