Commands using echo sorted by votes

Commands using echo (1,545)

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Convert control codes to visible Unicode Control Pictures

Not better, but more lightweight (sed instead of perl). Above command is reduced due to length restriction of less than 256 characters and entity encoding of "Save" command on this page. This is complete command (best without entity encoding): echo -e '\x2Helo folks\t!\r' | sed "y/\x0\x1\x2\x3\x4\x5\x6\x7\x8\x9\xA\xB\xC\xD\xE\xF\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F\x20/␀␁␂␃␄␅␆␇␈␉␊␋␌␍␎␏␐␑␒␓␔␕␖␗␘␙␚␛␜␝␞␟␠/" ␂Helo␠folks␉!␍ Show Sample Output
This is sample output - yours may be different.
```
&#9218;Helo&#9248;folks&#9225;!&#9229;
```
0

echo -e '\x2Hello, folks\t!\r' | sed "y/\x2\x9\xD\x20/␂␉␍␠/"

hermannsw · 2014-06-30 14:42:15 7
Btrfs: Find file names with checksum errors

btrfs checksum errors console report. Show Sample Output
This is sample output - yours may be different.
```
btrfs checksum error(s) on: 
         dev /dev/sda5, path: lib/mysql/ib_logfile0
         dev /dev/sda5, path: lib/mysql/ibdata1
         dev /dev/sda5, path: log/warn
```
0

echo "btrfs checksum error(s) on: " && grep "btrfs: checksum error at logical" /var/log/messages | sed -e 's/^.*$ dev .*$$, sector.*$$path\: .*$)/\t\1, \3/' | sort | uniq

jcoll · 2014-07-01 08:56:05 7
SSH/wmic to remotely kill a process on a windows box

Tested on Windows 8 w/SSH, Cygwin - it can be tricky to quote if you dont use the $(..) syntax to echo it back out Show Sample Output
This is sample output - yours may be different.
```
Deleting instance \\YOUR-PC\ROOT\CIMV2:Win32_Process.Handle="4824"
Instance deletion successful.
```
0

ssh <user>@<ip address> $(echo wmic process where \"name like \'%<process to kill>%\'\" delete)

adanisch · 2014-07-02 04:41:05 6
Git autocomplete

Downloads this raw script https://github.com/git/git/blob/master/contrib/completion/git-completion.bash from Github, copies it to your home directory, autoloads it in ~/.bashrc and sources it.
This is sample output - yours may be different.
0

wget https://raw.githubusercontent.com/git/git/master/contrib/completion/git-completion.bash; mv git-completion.bash ~/.git-completion.bash; echo "source ~/.git-completion.bash" > ~/.bashrc; source ~/.git-completion.bash

servel333 · 2014-07-22 14:21:00 21
generate a uuid

piped this to pbcopy (OSX only) you got a uuid in the pasteboard Show Sample Output
This is sample output - yours may be different.
```
bcb6256f-75f2-4d3b-936e-4d86b29c6a24
```
0

echo "import uuid\nimport sys\nsys.stdout.write(str(uuid.uuid4()))" | python

tippy · 2014-07-23 07:43:01 8
Change directory for current path (in bash)

change the path where you are, when is executed, is usefule when you've got folders to classify something like a tags, you've got devel/dist, android/ios, etc. like: ~user/Documents/devel/project ~user/Documents/dist/project You can change between devel/project folder to dist/project without leave project. If somebody has a better idea to do that without replace command. Show Sample Output
This is sample output - yours may be different.
```
/home/user/Documents/devel -> /home/user/Documents/dist
```
0

changeFolder() { if [ $# -ne 2 ]; then echo "Usage: changeFolder old new"; return; fi; old=$(pwd); folder=$(echo "$old" | sed -e "s/$1/$2/g"); if [ ! -d "$folder" ]; then echo "Folder '$folder' not found."; return; fi; echo "$old -> $folder"; cd $folder;}

Dracks · 2014-07-29 15:36:32 7
Check CRL expiration time

Downloads a CRL file, determines the expiration time, and checks when it will expire Show Sample Output
This is sample output - yours may be different.
```
OK
```
0

[ `curl 'http://crl.godaddy.com/gds5-16.crl' 2>/dev/null | openssl crl -inform DER -noout -nextupdate | awk -F= '{print $2}' | xargs -I{} date -d {} +%s` -gt `date -d '8 hours' +%s` ] && echo "OK" || echo "Expires soon"

hufman · 2014-08-07 17:18:38 8
Update music info with public database data

echoprint identify your song, then return artist, song name and album name(release) in a JSON. jq parse it and mp3info set the data in your mp3 file. of course it depends on: mp3info jq echoprint You need to set the environment variable export CODEGEN_NEST_API_KEY='YOUR_ECHONEST_KEY_HERE' You can use it with find, but probably will bypass the 120 request/minute of developer account key. So, use a sleep to do it. Something like: find -name \*.mp3 | while read $f; do eval echo $(echoprint-codegen "$f" | jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash; sleep 1; done
This is sample output - yours may be different.
0

eval echo $(echoprint-codegen "/path/to/file.mp3"| jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash

glaudiston · 2014-08-08 21:14:53 8
Turn on NFS Debugging

echo 1 > /proc/sys/sunrpc/nfs_debug && tail -f /var/log/messages to debug NFS issues.
This is sample output - yours may be different.
0

echo 1 > /proc/sys/sunrpc/nfs_debug

harpo · 2014-08-12 14:40:55 9
check web site status
This is sample output - yours may be different.
0

if [ "`curl -s --head domain.tld | grep HTTP | cut -d" " -f2`" != "200" ];then echo "error"; echo "doing else" ;fi

sckn · 2014-08-15 06:28:46 8
bored of the waiting for moderation
This is sample output - yours may be different.
0

echo "bored of the awaiting moderation"

teraflops · 2014-08-19 01:22:31 8
Check if a process is running (Windows)

There are many ways to do it on *nix. But on Windows, it's a bit convoluted. I use the above command expression in a batch file to check if a process is running already before running it again. I use this is a batch file I created to switch between 2 different versions of PowerBuilder (PB). I wanted to make sure, one version of PB is not running, before letting the user to switch, hence this check. (replace notepad.exe with PB125.exe above). /nh means no header, /fi means filter. We are filtering for Notepad.exe only above. Then, we take that and look for Notepad.exe using a FindStr command. It will still work, even if we don't have those 2 flags, but it makes finding the right program quicker. && and || are part of the conditional expressions see here: http://www.robvanderwoude.com/condexec.php. We use these to print for the IF...ELSE condition. >nul is the equivalent of Unix /dev/null Rest is self explanatory, I think. Show Sample Output
This is sample output - yours may be different.
```
Notepad is running
```
0

tasklist /nh /fi "imagename eq notepad.exe" | findstr /i "notepad.exe" >nul && (echo Notepad is running)|| (Echo Notepad is not running)

unixmonkey80767 · 2014-08-22 00:52:19 12
List Canon CR2 raw files which have been in-camera rated (5Dmk3+)
This is sample output - yours may be different.
0

for I in *.CR2; do if [ `exiv2 pr -p a -u $I | grep 'xmp.Rating' | awk '{ print $4 }'` == "1" ]; then echo $I; fi; done

jbuchbinder · 2014-09-10 03:31:44 8
10 files backup rotate in crontab

this command can be added to crontab so as to execute a nightly backup of directories and store only the 10 last backup files.
This is sample output - yours may be different.
0

for file in $(find /var/backup -name "backup*" -type f |sort -r | tail -n +10); do rm -f $file; done ; tar czf /var/backup/backup-system-$(date "+\%Y\%m\%d\%H\%M-\%N").tgz --exclude /home/dummy /etc /home /opt 2>&- && echo "system backup ok"

akiuni · 2014-09-24 14:04:11 10
Resource Monitoring

Monitoring system in one line : DISK : disk space MEM: memory ( mem , swap, Total) CPU : all information about cpu activity LOAD : load average Show Sample Output
This is sample output - yours may be different.
```
DISK:
94% /
6% /boot
0% /dev/shm
MEM:
total used free shared
Mem: 7983 7580 403
Swap: 12287 6 12281
Total: 20271 7586 12685
CPU:
0.3%us, 0.2%sy, 0.1%ni, 98.2%id, 1.1%wa, 0.0%hi, 0.1%si, 0.0%st
LOAD:
0.02 0.03 0.00 1/417 15018
```
0

echo "DISK:";df -Pl | grep -v "Filesystem" | awk '{print $5,$6}' ; echo "MEM:" ; free -mto | awk '{ print $1,$2,$3,$4 }'; echo "CPU:"; top -b -d1 -n1 | grep Cpu | awk '{print $2,$3,$4,$5,$6,$7,$8,$9}';echo "LOAD:"; cat /proc/loadavg

injez · 2014-09-29 12:43:52 35
Print out which hosts are not running specific process

Given a hosts list, ssh one by one and echo its name only if 'processname' is not running. Show Sample Output
This is sample output - yours may be different.
```
hostone
hosttwo
hostthree
```
0

for i in `cat hosts_list`; do RES=`ssh myusername@${i} "ps -ef " |awk '/[p]rocessname/ {print $2}'`; test "x${RES}" = "x" && echo $i; done

arlequin · 2014-10-03 14:57:54 9
Install every (not already installed) component of the Google Cloud SDK

Google Cloud SDK comes with a package manager `gcloud components` but it needs a bit of `sed` to work. Modify the "^| Not" bit to change the package selection. (The gcloud --format option is currently broken) Show Sample Output
This is sample output - yours may be different.
```
gcloud components update pkg-go pkg-java pkg-python app gae-python-launcher-mac gae-go gae-java gae-python
```
0

gcloud components list | grep "^| Not" | sed "s/|$.*$|$.*$|$.*$|/\2/" | xargs echo gcloud components update

wires · 2014-10-13 20:52:25 11
Get your external IP address

Easiest way to get the external IP address.
This is sample output - yours may be different.
0

echo $(wget http://ipecho.net/plain -q -O -)

KonKar · 2014-10-25 20:25:05 11
Equivalent to ifconfig -a in HPUX
This is sample output - yours may be different.
0

netstat -nr|egrep -v "Routing|Interface|lo0"|awk '{print $5}'|sort -u| while read l; do ifconfig $l ; echo " Station Addr: `lanscan -ia|grep "$l "|cut -d ' ' -f 1`" ; done

innominable · 2014-10-31 09:20:46 7
underscore to camelCase
This is sample output - yours may be different.
0

echo to_camel_case__variable | sed -r 's/(.)_+(.)/\1\U\2/g;s/^[a-z]/\U&/'

estani · 2014-11-05 13:23:01 8
relax with philosophy while taking a dig
This is sample output - yours may be different.
0

for i in `seq 1 100`; do echo "I think therefore I am" | espeak; done

marlboro · 2014-11-08 06:30:11 10
Create AUTH PLAIN string to test SMTP AUTH session
This is sample output - yours may be different.
0

authplain() { echo -n "AUTH PLAIN "; echo -n \\0$1\\0$2\\0 | base64; }

danky · 2014-11-26 15:24:08 8
Have a user generate an ssh key if it does not already exist and spit it in bold red to stdout
This is sample output - yours may be different.
0

if [ -e ~/.ssh/id_rsa.pub ] ; then echo $'\033[1;31m' ; cat ~/.ssh/id_rsa.pub ; echo $'\033[0m' ; else ssh-keygen -t rsa -b 4096 -f ~/.ssh/id_rsa -t rsa -P ""; echo $'\033[1;31m' ; cat ~/.ssh/id_rsa.pub ; echo $'\033[0m'; fi

sdoradus · 2014-12-01 03:48:19 8
Transpose column to row
This is sample output - yours may be different.
0

echo `echo -e "a\nb\nv"`

bejelith · 2014-12-02 07:40:53 7
pip shortcut to download a package and append it to your requirement.txt file in that project folder
This is sample output - yours may be different.
0

pipi () {pip install $1 && echo $(pip freeze | grep -i $1) >> requirements.txt;}

jkatzer · 2014-12-02 20:55:48 9
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Find top 10 largest files in /var directory (subdirectories and hidden files included )

Should work even when very large files exist.

Make a zip file with date/time created in the name of the file , zip all sub-directorys

zip -r /tmp/filename-`date +%Y%m%d_%H%M%S`.zip /directory/

Console clock

Sum size of files returned from FIND

Are the two lines anagrams?

This works by reading in two lines of input, turning each into a list of one-character matches that are sorted and compared.

list files with last modified at the end

url shortner using google's shortner api

First get a api key for google url shortner from here https://developers.google.com/url-shortener/ Then replace the API_KEY in the command

Create a thumbnail from a video file

need ascii art pictures for you readme text ?

Require boxes and / or cowsay packages. After input boxes -d dog , type your text and then press ctrl + d . Same goes for cowsay .

ruby one-liner to get the current week number

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Commands using echo (1,545)

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