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Commands using echo

Commands using echo from sorted by
Terminal - Commands using echo - 1,115 results
( x=`tput op` y=`printf %$((${COLUMNS}-6))s`;for i in {0..256};do o=00$i;echo -e ${o:${#o}-3:3} `tput setaf $i;tput setab $i`${y// /=}$x;done; )
2012-09-18 11:23:46
User: mkfmn
Functions: echo tput
0
Up
Down
test console colors
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo $(find <directory> -name '*.<extension>' -exec du -s {} \; | tee $(tty) | cut -f1 | tr '\n' '+') 0 | bc
2012-09-17 22:46:50
User: ysangkok
Functions: cut du echo find tee tr
Tags: find du tty-dependant
-1
Up
Down
Sum files of certain extension in given directory

Also shows files as they are found. Only works from a tty.

Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
i=0; while [ $i -lt 100 ]; do echo "test, ttest, tttest-${i}" >> kk.file; i=`expr $i + 1`; done
2012-09-13 21:46:18
User: kaushalmehra
Functions: echo
Tags: unix while loop for loop
-3
Up
Down
Generate a test csv file using looping in AIX

while commandt

do

command

command

...

done

{commandt is executed and its exit status tested.}

for i in 1 2 3

> do

> echo $i

> done

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for i in /sys/block/sd* ; do wwn=`/lib/udev/scsi_id -g -s /block/${i##*/}` ; [ "$wwn" != "" ] && echo -e ${i##*/}'\t'$wwn ;done
2012-09-12 14:14:53
User: mhs
Functions: echo
Tags: sysfs WWN LUNs scsi_id
1
Up
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Formatted list - WWNs of all LUNs

Use `scsi_id` to positively identify which LUNs are which (i.e. compare with the list of LUNs you created on your disk array)

(shown: RHEL5 usage)

Debian usage:

# for i in /dev/sd* ; do wwn=`/lib/udev/scsi_id -g --device $i` ; [ "$wwn" != "" ] && echo -e ${i##*/}'\t'$wwn ;done
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avconv -i input.avi -target pal-dvd dvd.mpg && echo PAL > ~/.config/video_format && dvdauthor -o dvd/ -t dvd.mpg && dvdauthor -o dvd/ -T && growisofs -Z /dev/dvd -dvd-video dvd/
2012-09-09 20:56:54
User: ppq
Functions: echo
0
Up
Down
Burn a simple DVD-Video without menu using any given video file

This is the fastest way to burn a DVD-Video from the command line.

Dependencies:

libav-tools

dvdauthor

growisofs

The first command:

avconv -i input.avi -target pal-dvd dvd.mpg

converts any given video file avconv can handle into MPEG2-PS (6 Mbit/s) with AC3 audio (448 kbit/s). If your distribution is not up to date, just use ffmpeg - the syntax is the same. Hint: If you want to create an NTSC DVD, type ntsc-dvd instead ;-)

The second command:

echo PAL > ~/.config/video_format

sets PAL as your default video format. This is a workaround for an old dvdauthor bug. If you want NTSC, guess what? Type NTSC instead!

The third command:

dvdauthor -o dvd/ -t dvd.mpg

creates .VOB files and adds them to the dvd/ folder. You don't have to create this folder yourself. You can add as many titles as you like, just keep in mind that there's a maximum of 4482 MiB (4.37 GiB) for normal DVDs.

The fourth command:

dvdauthor -o dvd/ -T

finishes the DVD-Video.

Now you can burn your DVD using growisofs:

growisofs -Z /dev/dvd -dvd-video dvd/

Sources:

manpages

http://tuxicity.wordpress.com/2006/12/01/avi-to-dvd-with-ffmpeg-and-dvdauthor/

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apt-popcon() { (echo \#rank; apt-cache search "$@" |awk '$1 !~ /^lib/ {print " "$1" "}') |grep -Ff- <(wget -qqO- http://popcon.debian.org/by_inst.gz |gunzip); }
2012-09-08 00:29:31
User: khopesh
Functions: apt awk echo grep wget
Tags: Debian Ubuntu apt-cache
4
Up
Down
Search for packages, ranked by popularity

This will take the packages matching a given `apt-cache search` query (a collection of AND'd words or regexps) and tell you how popular they are. This is particularly nice for those times you have to figure out which solution to use for e.g. a PDF reader or a VNC client.

Substitute "ubuntu.com" for "debian.org" if you want this to use Ubuntu's data instead. Everything else will work perfectly.

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a=$(xwininfo |gawk 'BEGIN {FS="[x+ \t]*"} /-geometry/ {print int(($3+1)/2)*2"x"int(($4+1)/2)*2"+"$5"+"$6}') ; echo ${a} ; ffmpeg -f x11grab -s ${a} -r 10 -i :0.0 -sameq -f mp4 -s wvga -y /tmp/out.mpg
2012-08-31 14:48:41
User: dwygo
Functions: echo gawk
Tags: ffmpeg awk alsa xwininfo x11grab mp4 wvga
0
Up
Down
Capture screen and mic input using FFmpeg and ALSA

Now we can capture only a specific window (we have to chose by clicking on it)

ffmpeg complains about "Frame size must be a multiple of 2" so we calculate the upper even number with (g)awk trickery.

We remove the grep, we are already using (g)awk here ....why losing time with grep !!! ;)

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SUBNET="192.168.41" ; diff -y <(nmap -sP -n ${SUBNET}.0/24 | grep ${SUBNET}. | awk '{print $5}' | sort -t"." -k4 -n) <(for i in $(seq 1 254); do echo ${SUBNET}.$i; done)
2012-08-28 09:11:18
User: michel_p
Functions: awk diff echo grep seq sort
0
Up
Down
Look for free ip's in a given /24 subnet.

The command will make it easy to determine free IP ranges in a crowded sub-net.

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Q="Hello world"; GOOG_URL="http://www.google.com/search?q="; AGENT="Mozilla/4.0"; stream=$(curl -A "$AGENT" -skLm 10 "${GOOG_URL}\"${Q/\ /+}\"" | grep -oP '\/url\?q=.+?&amp' | sed 's/\/url?q=//;s/&amp//'); echo -e "${stream//\%/\x}"
2012-08-26 20:13:21
User: westeros91
Functions: echo grep sed
Tags: curl google
1
Up
Down
Search Google
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echo "" > filr.txt
2012-08-23 19:31:51
User: kalikid021
Functions: echo
-23
Up
Down
Empty a file
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echo 'main(t){for(;;t++)putchar(((t<<1)^((t<<1)+(t>>7)&t>>12))|t>>(4-(1^7&(t>>19)))|t>>7);}' | cc -x c - -o crowd && ./crowd | aplay
2012-08-22 10:15:27
User: mx4492
Functions: cc echo
Tags: music aplay bytebeat
0
Up
Down
Bytebeat

Never ending music, generated via a C snippet, piped to aplay. Taken from: http://canonical.org/~kragen/bytebeat/

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echo -e "`curl -sL http://www.commandlinefu.com/commands/random/json|sed -re 's/.*,"command":"(.*)","summary":"([^"]+).*/\\x1b[1;32m\2\\n\\n\\x1b[1;33m\1\\x1b[0m/g'`\n"
2012-08-17 11:47:20
User: xenomuta
Functions: echo
Tags: login random random commands commandlinefu.com
4
Up
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Show a random oneliner from commandlinefu.com

This will parse a random command json entry from http://commandlinefu.com

A must have in your .bash_profile to learn new shell goodies at login!!!

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centralized(){ L=`echo -n $*|wc -c`; echo -e "\x1b[$[ ($COLUMNS / 2) - ($L / 2) ]C$*"; }
2012-08-16 18:19:26
User: xenomuta
Functions: echo wc
Tags: echo ansi
0
Up
Down
Output centralized text on command line

Echoes text horizontally centralized based on screen width

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alarmclock() { [ $1 ] || echo Parameter TIME is missing. 1>&2 && return 1 ; ( sleep $1 ; for x in 9 8 7 6 5 4 3 2 1 ; do for y in `seq 0 $[ 10 - $x ] ` ; do printf "\a"; sleep 0.$x ; done ; done ) & }
2012-08-16 15:35:15
User: lkj
Functions: echo printf return sleep
0
Up
Down
Alarmclock function makes usage of a BEL (\a) character.

usage: alarmclock TIME

TIME is a sleep(1) parameter which tells function how long to wait until raise the alarm.

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echo 00:29:36 | sed s/:/*60+/g | bc
2012-08-11 00:47:47
User: debyatman
Functions: echo sed
Tags: echo date time
-1
Up
Down
Convert HH:MM:SS into seconds
Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
vlc $(for f in /proc/$(pgrep -f libflashplayer.so |head -n 1)/fd/*; do ;if $(file ${f} |grep -q "broken symbolic link to \`/tmp/FlashXX"); then echo ${f};fi;done)
2012-08-07 08:04:56
User: rtaycher
Functions: echo file grep head
0
Up
Down
Opens up cached flash plugin video files(linux)
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echo 3 > /proc/sys/vm/drop_caches
2012-08-05 19:35:14
User: andreisid
Functions: echo
-4
Up
Down
free up memory
Comments (3) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
for i in $(tmux list-windows -F '#{window_index}'); do panenames=$(tmux list-panes -t $i -F '#{pane_title}' | sed -e 's/:.*$//' -e 's/^.*@//' | uniq); windowname=$(echo ${panenames} | sed -e 's/ /|/g'); tmux rename-window -t $i $windowname; done
2012-08-03 01:43:51
User: mrfixit42
Functions: echo sed
Tags: tmux byobu
0
Up
Down
Set name of windows in tmux/byobu to hostnames of servers you're connected to

*I run this with byobu as as a custom status bar entry that runs every 10 seconds by putting it in a script here:

.byobu/bin/10_update_windows

There's no output to stdout, so nothing is displayed on the status bar.

*Presumes that #{pane_title} is set to the hostname or prompt containing the host name. In my case, it's in this format:

$USER@$HOSTNAME:$PWD

The sed commands may need to be modified if your pane_title is different.

*If you want to strip out a common part of a hostname, add the following before '| uniq'

-e 's/[COMMON PART]//'

I use that to strip out the domain of the servers I connect to, leaving the subdomain.

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egrep_escape() { echo "$1" |sed -re 's/([\\.*+?(|)^$[])/\\\1/g' -e 's/\{/[{]/g'; }
2012-08-02 16:54:43
User: regnarg
Functions: echo sed
Tags: grep escape
0
Up
Down
Escape literal string for inclusion in an egrep regex

Use if you want to include untrusted literal strings in your grep regexes.

I use it to list all mounts below a directory:

dir=/mnt/gentoo; cat /proc/mounts |awk '{print $2}' |egrep "^$(egrep_escape "$dir")(/|$)"

/mnt/gentoo

/mnt/gentoo/proc

/mnt/gentoo/sys

/mnt/gentoo/dev

/mnt/gentoo/home

Works even if $dir contains dangerous characters (e.g. comes from a commandline argument).

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export PATH= $(echo $PATH | tr ':' '\n' | awk '!/matching string/' | paste -sd:)
2012-07-29 00:30:54
User: bugmenot
Functions: awk echo export paste tr
0
Up
Down
Remove from PATH paths containing a string

If there are spaces won't work.

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echo "DESCRIBE dbname.table_name" | mysql -u dbusername | awk '{print $1}' | grep -v Field
2012-07-26 21:06:11
User: adauto
Functions: awk echo grep
0
Up
Down
Displays all the fields of a table, really usefull to run it inside editor (Emacs or vim)

You can execute this inside an editor to get all the fields inside your buffer and do the magic, really usefull when your tables contain a giant list of fields.

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prefix="169.254" && for i in {0..254}; do echo $prefix.$i/8; for j in {1..254}; do sh -c "ping -m 1 -c 1 -t 1 $prefix.$i.$j | grep \"icmp\" &" ; done; done
2012-07-25 12:07:15
User: tempelorg
Functions: echo sh
Tags: ping
0
Up
Down
Ping sweep without NMAP

This version combines the best of the other suggestions and adds these features:

1. It scans a /16 subnet

2. It is very fast by running the ping commands in the background, running them in parallel.

3. Does not use the "-W" option as that's not available in older ping versions (I needed this for OS X 10.5)

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echo "properly_escaped_command" | ssh user@host $(< /dev/fd/0)
2012-07-18 10:36:07
User: trantorvega
Functions: echo ssh
Tags: host ssh expansion bash quote
2
Up
Down
run complex remote shell cmds over ssh, without escaping quotes

It executes commands as arguments to ssh, avoiding problematic shell expansions, without the need of writing the commands in question to a temporary file, just reading them from STDIN.

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goWall() { if [ $# -ne 1 ]; then echo 'goWall image';return;fi;w=w.jpg;o="$1";f="$1"-f;of="$1"-af;off="$1"-aff;convert "$1" -flop $f;montage -geometry +0+0 -tile 2x "$1" $f $of;convert $of -flip $off;montage -geometry +0+0 -tile 1x $of $off $w }
2012-07-17 05:01:58
User: meathive
Functions: echo
0
Up
Down
Make a repeating patterned wallpaper from any image

This command clones an image three times and creates a 'tile' image that can be used for a repeating pattern wallpaper. Add 'rm $f $of $off' to the end for cleanup (command was too long to submit with it).

See this link for an example: http://meathive.deviantart.com/art/Easy-Photography-Hack-314846774

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for i in /var/spool/cron/tabs/*; do echo ${i##*/}; sed 's/^/\t/' $i; echo; done
2012-07-12 08:07:20
User: harpo
Functions: echo sed
Tags: sed echo for for loop
1
Up
Down
Show crontabs for all users

This is flatcaps tweaked command to make it work on SLES 11.2

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