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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encode a text to url_encoded format

usefull for posts via wget

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Find the package that installed a command

Determine configure options used for MySQL binary builds

Output is from Debian Lenny

Checks apache's access_log file, strips the search queries and shoves them up your e-mail

as unixmonkey7109 pointed out, first awk parse replaces three steps.

Save all commands from commandlinefu.com to plain text sort by vote

Faster then other method using wget For obtain all commands use $nu=`curl http://www.commandlinefu.com/commands/browse |grep -o "Terminal - All commands -.*results$" | grep -oE "[[:digit:],]{4,}" | sed 's/,//'`; $curl http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/[0-"$nu":25] | grep -vE "_curl_|\.com by David" > clf-ALL.txt For more version specific $nu=`curl http://www.commandlinefu.com/commands/browse |grep -o "Terminal - All commands -.*results$" | grep -oE "[[:digit:],]{4,}" | sed 's/,//'`; $curl http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/[0-"$nu":25] | grep -vE "_curl_|\.com by David" > clf-ALL_"$nu".txt Also download dirctly from my dropbox My drop box invitaion link is http://db.tt/sRdJWvQq . Use it and get free 2.5 GB space.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Encode a string using ROT47

This command will encode a string using the ROT47 cipher.

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Pronounce an English word using Dictionary.com

This one uses dictionary.com

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