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
‹ First < 37 38 39 40 41 > Last ›

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Set laptop display brightness

Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Make a thumbnail image of first page of a PDF.

convert is included in ImageMagick. Don't forget the [X] (where X is the page number). [0] is the first page of the PDF.

Determine if a port is open with bash

For times when netcat isn't available. Will throw a Connection refused message if a port is closed. Scriptable: $ (: /dev/null && echo "OPEN" || echo "CLOSED"

Rename files in batch

Count to 65535 in binary (for no apparent reason)

Yes, it's useless.

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

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)

Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Recursive Line Count

Do Google search from that command line opening into a new Firefox tab.

Usage: google "[search string]" Example: google "something im searching for" This will launch firefox and execute a google search in a new tab with the provided search string. You must provide the path to your Firefox binary if using cygwin to $ff or create an alias like follows: alias firefox='/cygdrive/c/Program Files (x86)/Mozilla Firefox/firefox.exe' Most Linux flavors with Firefox installed will use just ff="firefox" and even OSX.

Optimal way of deleting huge numbers of files

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Commands using echo (1,545) the last day the last week the last month all time sorted by date votes

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Commands using echo (1,545)

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