Commands using echo sorted by votes

Commands using echo (1,545)

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ls output with mode in octal

this requires the use of a throwaway file. it outputs a shell function. assuming the throwaway file is f.tmp usage: >f.tmp;lso f.tmp > f.tmp; . f.tmp;rm f.tmp;lso -l ... notes: credit epons.org for the idea. however his version did not account for the sticky bit and other special cases. many of the 4096 permutations of file permissions make no practical sense. but chmod will still create them. one can achieve the same sort of octal output with stat(1), if that utility is available. here's another version to account for systems with seq(1) instead of jot(1): lso(){ case $# in 1) { case $(uname) in FreeBSD) jot -w '%04d' 7778 0000 7777 ;; *) seq -w 0000 7777 ;; esac; } \ |sed ' /[89]/d s,.*,printf '"'"'& '"'"';chmod & '"$1"';ls -l '"$1"'|sed s/-/./,' \ |sh \ |{ echo "lso(){"; echo "ls \$@ \\"; echo " |sed '"; sed ' s, ,@,2; s,@.*,,; s,$.* $$.*$,s/\2/\1/,; s, ,,'; echo \'; echo }; }; ;; *) echo "usage: lso tmp-file"; ;; esac; } this won't print out types[1]. but its purpose is not to examine types. its focus is on mode and its purpose is to make mode easier to read (assuming one finds octal easier to read). 1. one could of course argue "everything is a file", but not always a "regular" one. e.g., a "directory" is really just a file comprising a list.
This is sample output - yours may be different.
0

lso(){ jot -w '%04d' 7778 0000 7777 |sed '/[89]/d;s,.*,printf '"'"'& '"'"';chmod & '"$1"';ls -l '"$1"'|sed s/-/./,' \ |sh \ |{ echo "lso(){";echo "ls \$@ \\";echo " |sed '";sed 's, ,@,2;s,@.*,,;s,$.* $$.*$,s/\2/\1/,;s, ,,';echo \';echo };};}

argv · 2012-01-08 05:48:24 4
Convert Hex to String
This is sample output - yours may be different.
0

echo 474e552773204e6f7420556e697821 | sed -e 's/$.\{2\}$/\\\\x\1/g' | xargs echo -e

jcubic · 2012-01-14 10:26:29 540
bash: display CURRENT time in prompt, when entering a command

Test'd & work'd fine on: HP-UX, SUSE, with bash # "Work'd" 's are wellcome! APu Show Sample Output
This is sample output - yours may be different.
```
@18:09:03 SanyiGepe:/$ date ; sleep 3 ; date
Fri Jan 20 18:09:03 MET 2012
Fri Jan 20 18:09:06 MET 2012
@18:09:06 SanyiGepe:/$
```
0

$ echo -e '\n## [hu_HU]Aktualis ido/datum a prompt-ba (PS1)\n# TraceBack: http://goo.gl/MlkcQ\nPS1="@\$(date +%H:%M:%S) $PS1"\n' >>~/.bashrc

APuHun · 2012-01-20 17:17:12 9
Generate Random Text based on Length

Ever need to get some text that is a specific number of characters long? Use this function to easily generate it! Doesn't look pretty, but sure does work for testing purposes! Show Sample Output
This is sample output - yours may be different.
```
[bbbco ~]$ genRandomText 122
onzwxfeknlnvycuccvki dybtrqibdpgl aeclwkfpuxkohucy cqlmpbkwgcqesimxupdkqiymucljhitffb czegujyofidnxnvrkolhmudslpklbjnpmun
[bbbco ~]$ genRandomText 122 | wc -m
122

[bbbco ~]$ genRandomText 27
b bpglferrcsrtveiop umn nq
[bbbco ~]$ genRandomText 27 | wc -m
27
```
0

genRandomText() { a=( a b c d e f g h i j k l m n o p q r s t u v w x y z );f=0;for i in $(seq 1 $(($1-1))); do r=$(($RANDOM%26)); if [ "$f" -eq 1 -a $(($r%$i)) -eq 0 ]; then echo -n " ";f=0;continue; else f=1;fi;echo -n ${a[$r]};done;echo"";}

bbbco · 2012-01-20 21:18:16 4
display memory usage of a process

page where I got inspiration: http://www.commandlinefu.com/commands/view/5473/get-acurate-memory-usage-of-a-process-in-megabytes and http://www.commandlinefu.com/commands/view/10022/display-the-top-10-running-processes-sorted-by-memory-usage
This is sample output - yours may be different.
0

TOTAL_RAM=`free | head -n 2 | tail -n 1 | awk '{ print $2 }'`; PROC_RSS=`ps axo rss,comm | grep [h]ttpd | awk '{ TOTAL += $1 } END { print TOTAL }'`; PROC_PCT=`echo "scale=4; ( $PROC_RSS/$TOTAL_RAM ) * 100" | bc`; echo "RAM Used by HTTP: $PROC_PCT%"

0disse0 · 2012-02-03 16:10:36 12
Epoch time conversion

0x Show Sample Output
This is sample output - yours may be different.
```
Wed Feb 1 12:41:50 JST 2012
```
0

echo $(date -d @$((0x4f28b47e)))

h_nose · 2012-02-07 11:14:08 15
echo text in fancy manner

change the time that you would like to have as print interval and just use it to say whatever you want to Show Sample Output
This is sample output - yours may be different.
```
sayspeed "Who are you?"

Who are you?

----

sayspeed "Loading..."

Loading...
```
0

sayspeed() { for i in $(seq 1 `echo "$1"|wc -c`); do echo -n "`echo $1 |cut -c ${i}`"; sleep 0.1s; done; echo "";}

kundan · 2012-02-11 05:51:42 3
Tracklist reaplace backspace to '-'

for music file of mp3.zing.vn Show Sample Output
This is sample output - yours may be different.
```
Gui-Ngan-Loi-Yeu-Tuan-Hung.mp3
Heal-The-World-Michael-Jackson.mp3
Khong-Tin-Mot-Som-Mai-Binh-Yen.mp3
Kisses-and-Cake-John-Powell.mp3
Thu-Cuoi-Yanbi-ft.-Mr-T.mp3
Wait-For-You-X4-Band.mp3
```
0

ls|grep .mp3 >list.txt; while read line; do newname=`echo $line|sed 's/\ /-/g'|sort`; newname=`echo $newname|tr -s '-' `; echo $newname; echo $newname>> tracklist.txt;mv "$line" "$newname"; done <list.txt; rm list.txt

hieuht · 2012-02-16 08:33:14 12
Get your outgoing IP address

Gets the IP and sticks it into the middle-mouse-click buffer
This is sample output - yours may be different.
0

echo -n $(curl -Ss http://icanhazip.com) | xclip

red_five · 2012-02-17 16:58:40 3
List prime numbers from 2 to 100

This is actually quite slow~ P.S. change `seq 2 100` to `seq 2 1000` and try Show Sample Output
This is sample output - yours may be different.
```
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
```
0

for num in `seq 2 100`;do if [ `factor $num|awk '{print $2}'` == $num ];then echo -n "$num ";fi done;echo

alvinhochun · 2012-02-18 08:11:19 3
Basic Shell function die_msg

Using a standard way to handle error message and return code. Show Sample Output
This is sample output - yours may be different.
```
cd /path/to/somewhere || die_msg Cannot change CWD to somewhere
```
0

die_msg() { echo $@ >&2; exit -1; }

admon · 2012-02-24 04:06:04 3
Report summary of string occurrence by time period (hour) - alternate

useful to count events in logs @see: http://www.commandlinefu.com/commands/view/10327/report-summary-of-string-occurrence-by-time-period-hour#comment Show Sample Output
This is sample output - yours may be different.
```
2012-02-24 08 28
2012-02-24 09 122
2012-02-24 10 110
2012-02-24 11 95
```
0

cat z.log | cut -d ':' -f1 | sort | uniq | xargs -l1 -iFF echo 'echo FF $(cat z.log | grep -e "^FF" | grep -e Timeout | wc -l )' | bash

hute37 · 2012-02-28 17:25:14 3
for all who don't have the watch command

allows command to use switches
This is sample output - yours may be different.
0

watch() { if [ -z "$1" ]; then echo "usage: watch interval command" return fi sec=$1 shift while test :; do clear; date=$(date); echo -e "Every "$sec"s: $@ \t\t\t\t $date"; echo $@; sleep $sec; done }

kneufeld · 2012-02-29 17:10:19 3
Have your sound card call out elapsed time.

works the same, but uses festival instead of espeak
This is sample output - yours may be different.
0

for ((x=0;;x+=5)); do sleep 5; echo $x | festival --tts & done

mrklaw · 2012-03-06 21:17:51 4
Have your sound card call out elapsed time.

Says time every 5 seconds in hours, minutes and seconds using festival.
This is sample output - yours may be different.
0

for ((x=0;;x+=5)); do sleep 5; hours=$(($x/3600)); minutes=$(($x%3600/60)); seconds=$(($x%60)); echo "$hours hours $minutes minutes $seconds seconds have elapsed" | festival --tts & done

mrklaw · 2012-03-06 22:58:43 3
Poor man's watch: Repeat a command every N seconds

Usage: watch ls -l Basic but usable replacement for the "watch" command for those systems which don't have it (e.g. the Solaris I'm trapped on). Type Ctrl+V to escape the following Ctrl+L which clears the screen. It will be displayed as "^L".
This is sample output - yours may be different.
0

watch() { while true; do echo "<Ctrl+V><Ctrl+L>Every 2.0s: $@"; date; eval "$@"; sleep 2; done }

hfs · 2012-03-07 09:30:15 10
Print all words in a file sorted by length

optionally you can add |cut -d' ' -f2|uniq to the end of the command line.
This is sample output - yours may be different.
0

for a in $(cat sample.txt); do echo "$(wc -m<<<$a) $a";done|sort -n

knoppix5 · 2012-03-15 08:51:42 7
Print all words in a file sorted by length
This is sample output - yours may be different.
0

for a in $(cat sample.txt); do echo "${#a} $a";done|sort -n

livibetter · 2012-03-15 09:21:29 3
Write over previous line in bash
This is sample output - yours may be different.
0

seq 1 1000000 | while read i; do echo -en "\r$i"; done

evandrix · 2012-03-15 14:13:04 8
Print all words in a file sorted by length

Take a file and ,."()?!;: give a list of all the words in order of increasing length. First of all use tr to map all alphabetic characters to lower case and also strip out any puntuation. A-Z become a-z ,."()?!;: all become \n (newline) I've ignored - (hyphen) and ' (apostrophe) because they occur in words. Next use bash to print the length ${#w} and the word Finally sort the list numerically (sort -n) and remove any duplicates (sort -u). Note: sort -nu performs strangely on this list. It outputs one word per length. Show Sample Output
This is sample output - yours may be different.
```
...
9 suggested
9 unsightly
10 advantages
10 categorise
10 considered
10 everything
12 experimental
12 grandparents
13 insignificant
13 self-assembly
14 apologetically
```
0

for w in $(tr 'A-Z ,."()?!;:' 'a-z\n' < sample.txt); do echo ${#w} $w; done | sort -u | sort -n

flatcap · 2012-03-15 14:14:11 5
List users in a group

I can't find the lid command on my system, there is also another complied program: http://xyne.archlinux.ca/projects/lsgrp/
This is sample output - yours may be different.
0

lsgrp() { read GID USERS <<< "$(grep "^$1:" /etc/group | cut -d: -f3,4 | tr ':,' ' ')" ; echo -e "${USERS// /\n}" | egrep -v "^($1)?$" ; egrep :[0-9]+:$GID: /etc/passwd | cut -d: -f1 ; }

livibetter · 2012-03-16 09:57:33 3
Short log format of Subversion history

Emulate (more or less) Git equivalent of git log --format='tformat:%h %an (%cr) %s' Show Sample Output
This is sample output - yours may be different.
```
r1238354 bodewig (2012-01-31 11:01) help dealing with the case where BSF is there but JavaScript support is not - the current build failure in Gump
r1237442 bodewig (2012-01-29 20:58) another readablilty tweak
r1237438 bodewig (2012-01-29 20:49) extract handling of -source 1.1 and 1.2
```
0

svnll(){svn log "$@"|( read; while true; do read h||break; read; m=""; while read l; do echo "$l" | grep -q '^[-]\+$'&&break; [ -z "$m" ] && m=$l; done; echo "$h % $m" | sed 's#$.*$ | $.*$ | $[-0-9 :]\{16\}$.* % $.*$#\1 \2 (\3) \4#'; done)}

vhotspur · 2012-03-25 20:39:05 3
hostgrep: set ip and hostname from /etc/hosts (non-DNS)

usage: dng BRE [selection] default selection is the last match DNS is ok, but although domainnames may be easier to remember than IP numbers, it still requires typing them out. This can be error-prone. Even more so than typing IPv4 numbers, depending on the domainname, its length and complexity.
This is sample output - yours may be different.
0

dng(){ local a;a=$(sed '/'"$1"'/!d' /etc/hosts |sed '=;'"${2-1,$}"'!d'|sed '/ /!d');echo $a|tr '\040' '\n'|nl -bp'[0-9]$'|less -E;export dn=$(echo $a|sed 's,.* ,,');export ip=$(echo $a|sed 's, .*,,');echo \$dn=$dn;echo \$ip=$ip;}

argv · 2012-04-01 23:57:09 3
Print all words in a file sorted by length
This is sample output - yours may be different.
0

for a in $(< FILENAME); do echo "$(bc <<< $(wc -m<<<$a)-1) $a";done|sort -n

codecaine · 2012-04-02 02:15:52 3
Show git branches by date - useful for showing active branches

Simpler and without all of the coloring gimmicks. This just returns a list of branches with the most recent first. This should be useful for cleaning your remotes. Show Sample Output
This is sample output - yours may be different.
```
master
testing
this-shit-works
```
0

for k in $(git branch | sed /\*/d); do echo "$(git log -1 --pretty=format:"%ct" $k) $k"; done | sort -r | awk '{print $2}'

dahuie · 2012-04-07 11:19:00 6
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View acceptable client certificate CA names asked for during SSL renegotiations

The key is to use the -prexit option at the command line, and then type "quit" instead of CTRL-C to exit OpenSSL. OpenSSL will then dump its last negotiated state, printing out the contents of the renegotiated handshake. Crucial for debugging client certificate configurations on web servers such as IIS, which renegotiate the SSL/TLS connection with the HTTP request in-flight to ask the client for a cert.

Huh? Where did all my precious space go ?

Sort ls output of all files in current directory in ascending order Just the 20 biggest ones: $ ls -la | sort -k 5bn | tail -n 20 A variant for the current directory tree with subdirectories and pretty columns is: $ find . -type f -print0 | xargs -0 ls -la | sort -k 5bn | column -t And finding the subdirectories consuming the most space with displayed block size 1k: $ du -sk ./* | sort -k 1bn | column -t

Enable verbose boot in Mac OS X Open Firmware

Create the signature base string required for a Twitter stream feed

This is the SECOND command in a set for five that are needed for a Twitter stream feed. This command creates variable "b", the so-called "base string" required for oauth in Twitter stream feed requests. (The 256 char limit prevents giving it a better name) We use five environment variables created by a previous step: id, k1, once, ts and k3. The five environment variables are created in a separate command, please see my other commands. For more information on the signature base string, see dev.twitter.com/apps, click on any app (or create a new one) and then go to the "OAuth Tool" tab.

output your microphone to a remote computer's speaker

This will output the sound from your microphone port to the ssh target computer's speaker port. The sound quality is very bad, so you will hear a lot of hissing.

Audible warning when a downloading is finished

This command can be set as an alias in ~/.bashrc For example (in my case) I have : alias watchDl='while [ "$(ls $filePart)" != "" ]; do sleep 5; done; mpg123 /home/.../warning.mp3" ' Then I just need to - initialize filePart (e.g. filePart="*bigFile*rar.part") - launch watchDl

Get notified when a job you run in a terminal is done, using NotifyOSD

This is an alias you can add to your .bashrc file to get notified when a job you run in a terminal is done. example of use sleep 20; alert Source:http://www.webupd8.org/2010/07/get-notified-when-job-you-run-in.html

Truncate 0.3 sec from an audio file using sox

Using this command one can cut a piece from the end of an audio file.

Get a list of all TODO/FIXME tasks left to be done in your project

Place this in your .bashrc (or run it once) to set the `tasks` alias. Next time you enter `tasks` into a terminal, it will give you a list of all TODO and FIXME comments in the current directory and child directories, giving you a quick overview of what you still have to do!

Copy a file using dd and watch its progress

This is a more accurate way to watch the progress of a dd process. The $DDPID=$! is needed so that you don't get the PID of the sleep. The sleep 1 is needed because in my testing at least, if you run kill -USR1 against dd too quickly, it will kill it off instead of display the status. So you need to wait a second, probably so that it can configure itself to trap the USR1 signal.

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Commands using echo (1,545)

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