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Commands using echo

Terminal - Commands using echo - 1,101 results

mkalias () { echo "alias $1=\"$2\"" >> ~\.bash_aliases }

2013-01-14 13:56:35

User: xr09

Functions: echo

Tags: alias function

Up
Down

Function to create an alias on the fly

Is used like this:

mkalias rmcache "rm -rfv app/cache/*"

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find . | while read line; do test `stat -c %u $line` -eq 1003 && chown android:android $line && echo $line; done

2013-01-12 10:47:25

User: changyuheng

Functions: chown echo find read test

Up
Down

Change owner ship of files from 1003 to android under current directory recursively. 1003/android could be customized.

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if date -d 2006-10-10 >> /dev/null 2>&1; then echo 1; else echo 0; fi

2013-01-10 10:35:15

User: SteveGoossens

Functions: date echo

Tags: date validation

Up
Down

quick and easy way of validating a date format of yyyy-mm-dd and returning a boolean

On CentOS at least, date returns a boolean for the common date string formats, including YYYY-MM-DD. In the sample output, you can see various invalid dates returning 0 whereas a simple regex check would return 1 for the invalid dates.

-d, --date=STRING display time described by STRING, not `now'

The version of date on OS X does not appear to have this same option.

echo "main(i){for(i=0;;i++)putchar(((i*(i>>8|i>>9)&46&i >>8))^(i&i>>13|i>>6));}" | gcc -x c - && ./a.out | aplay

2013-01-09 21:48:23

User: r0nd0n

Functions: echo gcc

Up
Down

Useless fun

Something I pulled off 4chan, it plays a tune.

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echo -e "You are a jerk\b\b\b\bwonderful person" | pv -qL $[10+(-2 + RANDOM%5)]

2013-01-09 19:18:07

User: joeheyming

Functions: echo

Tags: movie on-screen typing

Up
Down

Simulate typing but with mistakes

The output will show jerk, then wonderful person since echo parses the \b character.

2013-01-02 07:45:54

User: hawo

Functions: echo

Up
Down

Indicates the position of my monitor buttons

I often need to change the brightness of my monitor. The symbols of the sensor buttons are not illuminated and on a black background .... invisible!

Now i use osd_cat instead of a torch ;-)

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echo 'flush_all' | nc localhost 11211 -i1 <<< 'quit'

2012-12-28 02:37:34

User: moimikey

Functions: echo

Up
Down

flush memcached via netcat

while sleep 1; do (mpc status;mpc currentsong)|awk 'BEGIN{FS=": "}/^Artist:/{r=r""$2};/^Title:/{r=r" - "$2};/^time:/{r=$2" "r};/^state: play/{f=1}END{if(f==1){print r}}'|echo -ne "\e[s\e[0;0H\e[K\e[0;44m\e[1;33m$(cat -)\e[0m\e[u";done &

2012-12-24 18:03:29

User: ichbins

Functions: awk echo sleep

Tags: bash mpd,

Up
Down

Displays mpd playing status in the terminal first raw

Actually this is a shorter version that fits the 255 chars limit of this resource. The full version shows status in the right top corner:

alias mpdd='while sleep 1; do _r=$(awk '\''BEGIN{FS=": "}/^Artist:/{r=r""$2};/^Title:/{r=r" - "$2};/^time:/{r=$2" "r};/^state: play/{f=1}END{if(f==1){print r}}'\'' <(mpc status;mpc currentsong));_l=${#_r};[ $_l -eq 0 ] && continue;[ -z "$_p" ] && _p=$_l;echo -ne "\e[s\e[0;${_p}H\e[K\e[u";_p=$((COLUMNS - _l));echo -ne "\e[s\e[0;${_p}H\e[K\e[0;44m\e[1;33m${_r}\e[0m\e[u";done &'

mpc is defined like this:

function mpc() {

echo "$*" | nc 192.168.1.1 6600

}

2012-12-13 13:13:16

User: stderr

Functions: dir echo find grep read sort wc

Up
Down

Returns top ten (sub)directories with the highest number of files

A lot of files in one dir is not so cool for filesystem.

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scrotit(){ echo "Screenshot in $1 seconds...";scrot -d $1 '%Y%m%d%h.png' -e 'curl -sF file1=@- http://ompldr.org/upload < $f | grep -P -o "(?<=File:).*(http://ompldr.org/.*)\<\/a\>";rm $f'| sed -r 's@.*(http://ompldr.org/\w{1,7}).*@\1@';}

2012-12-03 01:21:19

User: dzup

Functions: echo grep rm sed

Up
Down

Screenshot in $1 seconds, upload and retrieve URI from ompdlr.org

Take a screenshot, give $1 seconds pause to choose what to screenshot, then upload and get URI of post in ompdlr.org

echo $((RANDOM % 10 + 1))

2012-11-21 13:49:53

User: putnamhill

Functions: echo

Tags: bash

Up
Down

Generate random number with shuf

If you don't have seq or shuf, bash can be used.

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while true;do n="$(curl -s http://news.yahoo.com/rss/|sed 's/</\n/g'|grep "title>"|sed -e '/^\// d' -e 's/title>/---------- /g' -e '1,3d'|tr '\n' ' ')";for i in $(eval echo {0..${#n}});do echo -ne "\e[s\e[0;0H${n:$i:$COLUMNS}\e[u";sleep .15;done;done &

2012-11-17 23:56:17

User: SQUIIDUX

Functions: echo eval sleep

Up
Down

Create A Continuous Yahoo! News Ticker For The Terminal

This creates a permanent stock ticker in the terminal. it has scrolling action and refreshes when each cycle is done to get the latest news.

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for file in `ls -t \`find . -name "*.zip" -type f\``; do found=`unzip -c "$file" | grep --color=always "PATTERN"`; if [[ $found ]]; then echo -e "${file}\n${found}\n"; fi done

2012-11-12 15:43:15

User: vladfr

Functions: echo file grep

Up
Down

Grep through zip files

for file in `ls -t \`find . -name "*.zip" -type f\``; do

found=`unzip -c "$file" | grep --color=always "PATTERN"`;

if [[ $found ]]; then echo -e "${file}\n${found}\n"; fi

done

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while true; do echo -ne "\e[s\e[0;$((COLUMNS-27))H$(date)\e[u"; sleep 1; done &

2012-11-11 02:16:21

User: SQUIIDUX

Functions: echo sleep

Up
Down

Put a console clock in top right corner

This puts a clock in the top right of the terminal. This version doesn't use tput, but uses escape codes

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echo "your string here" | tr '\!-~' 'P-~\!-O'

2012-11-06 12:49:00

User: DevEd

Functions: echo tr

Up
Down

Encode a string using ROT47

This command will encode a string using the ROT47 cipher.

java -jar app.jar -cp $(echo lib/*.jar | tr ' ' ':')

2012-10-29 12:51:46

User: xymor

Functions: echo tr

Tags: java cli

Up
Down

Java app with dynamic classpath

Lauching an app including jars in an adjacent lib folder to its classpath

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for k in `git branch -r|awk '{print $1}'`;do echo -e `git show --pretty=format:"%Cgreen%ci_%C(blue)%c r_%Cred%cn_%Creset" $k|head -n 1`$k;done|sort -r|awk -F"_" '{printf("%s %17s %-22s %s\n",$1,$2,$3,$4)}'

2012-10-29 12:38:24

User: varon

Functions: awk echo head sort

Tags: bash git perl grep branches

-1

Up
Down

Show git branches by date - useful for showing active branches

simple table

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echo -e \\u2620

2012-10-28 00:29:27

User: SQUIIDUX

Functions: echo

Up
Down

echo unicode characters

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tail -f /var/log/messages.log | while read line ; do echo $line | cut -d \ -f5- | sed s/\\[[0-9]*\\]// | espeak ; done

2012-10-27 23:00:53

User: asdfkajsdfh

Functions: cut echo read sed tail

Up
Down

Pipe system log to espeak

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echo /home/foo/dir1/bar | awk -F/ -v OFS=/ '{$3 = "dir2"}1'

2012-10-26 16:17:20

User: zlemini

Functions: awk echo

Up
Down

Change a specific value in a path

Awk replaces the value of a specific field while retaining the field separator "/" .

echo foo | ncat [ip address] [port]

2012-10-26 10:53:47

User: dragonauta

Functions: echo

Tags: Network udp tcp icmp protocol socket

-1

Up
Down

send echo to socket network

you can use a pair of commands to test firewalls.

1st launch this command at destination machine

ncat -l [-u] [port] | cat

then use this command at source machine to test remote port

echo foo | ncat [-u] [ip address] [port]

First command will listen at specified port.

It will listen TCP. If you use -u option will listen UDP.

Second command will send "foo" through ncat and will reach defined IP and port.

for i in $(ps -eo pid|grep -v PID);do echo ""; echo -n "==$i== ";awk '/^read|^write/{ORS=" "; print}' /proc/$i/io 2>/dev/null; echo -n " ==$i=="; done|sort -nrk5|awk '{printf "%s\n%s %s\n%s %s\n%s\n\n",$1,$2,$3,$4,$5,$6}'

2012-10-25 17:16:24

User: omatictost

Functions: awk echo grep ps sort

Up
Down

Sort I/O activity by PID number.

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for i in `ls /var/log/sa/|grep -E "sa[0-9][0-9]"`;do echo -ne "$i -- ";sar -r -f /var/log/sa/$i|awk '{ printf "%3.2f\n",($4-$6-$7)*100/(3+$4)}'|grep -Eiv "average|linux|^ --|0.00|^-" |awk '{sum+=$1 }END{printf "Average = %3.2f%%\n",sum/NR}';done

2012-10-25 17:00:58

User: omatictost

Functions: awk echo grep printf

Up
Down

SAR - List the average memory usage for all days recorded under '/var/log/sa/*' using sar -r.

echo "abcdefg"|awk 'BEGIN {FS="''"} {print $2}'

2012-10-25 16:12:28

User: omatictost

Functions: awk echo

Up
Down

Print a single character from a string with AWK.

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echo 1268727836 | awk '{print strftime("%c",$1)}'

2012-10-25 15:39:08

User: omatictost

Functions: awk echo

Up
Down

Display EPOCH time in human readable format using AWK.

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