Commands using sleep sorted by votes

Commands using sleep (289)

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check the status of 'dd' in progress (OS X)

Observe the process of your dd command on Mac the Mac bash when you burn an .iso or .img on a SD-Card. This command avoids permission errors.
This is sample output - yours may be different.
0

while pgrep ^dd; do sudo pkill -INFO dd; sleep 20; done

kassnik · 2015-12-06 20:16:34 10
Powershell Curl Logs Signal Strength of Cable Modem

IMPORTANT: You need Windows PowerShell to run this command - in your Windows Command Prompt, type powershell Create a log file of your Motorola Surfboard SB6141 downstream signal strengths. Uses the built-in curl to request signal strength data from your SB6141 cable modem. HTML page 192.168.100.1/cmSignalData.htm has the signal strength numbers for the 8 downstreams. Some HTML/DOM processing parses out the 8 values from the above page. The eight extracted signal strengths are then logged to a file. A small while-loop watches the clock & repeats the process every 10 seconds. Show Sample Output
This is sample output - yours may be different.
```
PS C:\Users\user> type modemlog.txt
7:39:20 PM 1 dBmV  1 dBmV  1 dBmV  1 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV
7:39:30 PM 1 dBmV  1 dBmV  1 dBmV  1 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV
7:39:40 PM 1 dBmV  1 dBmV  1 dBmV  1 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV
7:39:50 PM 1 dBmV  1 dBmV  1 dBmV  1 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV
7:40:00 PM 1 dBmV  1 dBmV  1 dBmV  1 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV
7:40:10 PM 1 dBmV  1 dBmV  1 dBmV  1 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV
PS C:\Users\user>
```
0

while(1){while((date -f ss)%10-gt0){sleep -m 300} echo "$(date -u %s) $((curl 192.168.100.1/cmSignalData.htm).parsedhtml.body.childnodes.item(1).firstchild.firstchild.childnodes.item(5).outertext|%{$_ -replace '\D+\n',''})">>modemlog.txt;sleep 1;echo .}

omap7777 · 2015-12-24 02:12:10 11
Get current position of the International Space Station in pulses of 1 second

Requires jq (JSON parser) and curl (wget could do the same with some changes)
This is sample output - yours may be different.
0

while true; do pos=$(curl -s "http://api.open-notify.org/iss-now.json"); echo "lat=$(echo $pos | jq ".iss_position.latitude"), lon=$(echo $pos | jq ".iss_position.longitude")"; sleep 1; done

TheMadScientist · 2016-01-08 16:32:34 10
Auto-kill auto-spawned process

Given a process name (kdiff3 in this example) that keeps auto-spawning/starting, auto-kill until it stops, assuming there is an upper limit (if not, reboot). This was beneficial after I clicked the DIFF button in a git GUI on a merge commit. 2000+ files were being opened one after the other in my diff program (kdiff3). Each time I closed one (or quit Kdiff3), the next file would be auto-opened in Kdiff3.
This is sample output - yours may be different.
0

while [ ! -z $(ps -A | grep -m1 kdiff3 | awk '{print $1}') ]; do kill -9 $(ps -A | grep -m1 kdiff3 | awk '{print $1}'); sleep 1; done

supervisord · 2016-06-07 21:56:44 12
Move Mouse, click there, sleep, and again....

Moves the mouse, leftclick and sleep 10 seconds, move to another place, click and sleep again. And so on.
This is sample output - yours may be different.
0

while true; do xdotool mousemove 1390 500; xdotool click 1; sleep 1; xdotool mousemove 780 800; xdotool click 1; sleep 1; xdotool mousemove 1000 800; xdotool click 1; sleep 1;done

nosports · 2016-07-03 17:55:55 24
One-liner to draw a spinning cursor pinwheel in a terminal
This is sample output - yours may be different.
0

for item in \\ \| / - \\ \| / - \\ \| / - \\ \| / - \\ \| / - \\ \| / -; do echo -ne "$item \r"; sleep .2; done; echo

iammyownalterego · 2016-08-03 13:10:03 12
simulate Simultaneous connections with curl

to simulating connections Simultaneous to specific server adress to test penetrations Show Sample Output
This is sample output - yours may be different.
```
HTTP/1.1 200 OK
HTTP/1.1 200 OK
HTTP/1.1 200 OK
HTTP/1.1 200 OK
HTTP/1.1 200 OK
HTTP/1.1 200 OK
```
0

for i in {0..60}; do (curl -Is http://46.101.214.181:10101 | head -n1 &) 2>/dev/null; sleep 1; done;

aysadk · 2017-01-15 14:32:02 16
stress test curl 60 connection simulate
This is sample output - yours may be different.
0

for i in {0..60}; do (curl -Is http://<domain/ip> | head -n1 &) 2>/dev/null; sleep 1; done;

aysadk · 2017-01-24 02:47:13 13
test and send email via smtps using openssl client
This is sample output - yours may be different.
0

(sleep 1;echo EHLO MAIL;sleep 1;echo "MAIL FROM: <a@foo.de>";sleep 1;echo "RCPT TO: <b@bar.eu>";sleep 1;echo DATA;sleep 1;echo Subject: test;sleep 1;echo;sleep 1;echo Message;sleep 1;echo .;sleep 1;)|openssl s_client -host b.de -port 25 -starttls smtp

idella · 2017-05-06 17:53:38 23
Color code each job for GNU Parallel

Colorize each job in a new color.
This is sample output - yours may be different.
0

parallel -j10 --tagstring '\033[30;{=$_=++$::color%8+90=}m' sleep .3{}\;seq {} ::: {1..10}

unixmonkey91589 · 2017-07-05 19:36:27 20
pc is ghosted?!

scare hell out of user of just amuse by playing random .wav short files
This is sample output - yours may be different.
0

while true; do locate *.wav | sed "{${RANDOM:1:2}q;d;}" | xargs aplay; sleep 10; done &> /dev/null &

dav23r · 2017-08-25 15:11:54 18
Visual system load display

It takes the first value of /prov/loadavg to print that many stars followed by the value. Show Sample Output
This is sample output - yours may be different.
```
******************** 20.98
********************* 21.30
******************* 19.92
**************** 16.85
*************** 15.50
************** 14.90
```
0

while [ true ]; do cat /proc/loadavg | perl -ne 'm/(^[^ ]+)/; $L = $1; print "*" x $L; print " $L\n";' ; sleep 6; done

t3o · 2017-10-13 06:47:06 22
Show a clock in the upper right corner

This will use tput to place the command (date %T in this case) in the upper right corner of the terminal
This is sample output - yours may be different.
0

while sleep 1;do tput sc;tput cup 0 $(($(tput cols)-11));echo -e "\e[31m`date +%T`\e[39m";tput rc;done &

x3mboy · 2017-11-16 18:07:39 19
get all my commands in terminal
This is sample output - yours may be different.
0

clear && sleep 5s && curl --silent "http://www.commandlinefu.com/commands/by/dunryc" | grep '<div class="command">'|sed 's/......$//'|sed 's/^.....................................//'|recode html..ascii|awk 'ORS="\n\n\n\n"'

dunryc · 2018-03-28 20:17:40 182
simple pomodoro
This is sample output - yours may be different.
0

while true; do sleep $((40 * 60)); echo "Fuck away for some time"; sleep $((3 * 60)); done &

dav23r · 2018-04-23 10:37:19 162
Continuous random string of text
This is sample output - yours may be different.
0

while true; do sleep .15; head /dev/urandom | tr -dc A-Za-z0-9; done

allyman17 · 2018-10-10 18:57:34 397
watches every second, a directory listing as it changes

On Linux, use watch -n 1 ls path/to/dir H/t: https://stackoverflow.com/a/9574123/805405 Show Sample Output
This is sample output - yours may be different.
```
1
...
n
```
0

while :; do clear; ls path/to/dir | wc -l; sleep 1; done

minademian · 2018-12-13 17:48:24 233
Visual alert with keyboard LEDs
This is sample output - yours may be different.
0

for a in $(seq 16); do xdotool key Num_Lock;sleep .5; xdotool key Caps_Lock;done

knoppix5 · 2019-07-11 23:47:20 47
Infinite loop ssh

Useful when you wait for a server to boot up.
This is sample output - yours may be different.
0

while true; do ssh login@10.0.0.1; if [[ $? -ne 0 ]]; then echo "Nope, keep trying!"; fi; sleep 10; done

FluffyBrick · 2021-09-29 12:54:17 326
Infinite loop ssh

This version won't reconnect if you exit the ssh connection with a non-zero exit code. ConnectTimeout and sleep values knobs for how long to wait for each retry.
This is sample output - yours may be different.
0

h=root@localhost ; while ! ssh -o ConnectTimeout=5 $h true; do sleep 5; done; ssh $h

justsomeguy · 2022-03-05 06:48:06 365
run a command repeatedly

This runs a command continuously, restarting it if it exits. Sort of a poor man's daemontools. Useful for running servers from the command line instead of inittab.
This is sample output - yours may be different.
-1

doloop() { DONT=/tmp/do-run-run-run; while true; do touch $DONT; (sleep 30; rm $DONT;) & $1 ; if [ -e $DONT ]; then echo restarting too fast; return ; fi ; done }

evil_otto · 2009-02-21 02:11:18 5
Send and streamming video to web

Is a simple script for video streaming a movie
This is sample output - yours may be different.
-1

cat video.ogg | nc -l -p 4232 & wget http://users.bshellz.net/~bazza/?nombre=name -O - & sleep 10; mplayer http://users.bshellz.net/~bazza/datos/name.ogg

el_bazza · 2010-11-29 03:34:31 5
Get Informed by your box that you are awesome ;)

sends notification msg within repeated intervals of time to notify-send ;) Just for fun.
This is sample output - yours may be different.
-1

while $i;do `notify-send -t 200 "You are awesome :)"`;sleep 60; done;

pahnin · 2011-02-14 18:49:38 7
a simple alarm

this command will beep like an alarm for one minute from 18:57. you can change "1857" to your desired time. you should have alsa-oss package installed, and you should also be root or part of "audio" group.
This is sample output - yours may be different.
-1

while true; do while [ `date +%H%M` == "1857" ] ; do sleep 1s; yes | head -n 2000 > /dev/dsp; done; done;

mrwill · 2011-04-23 14:44:26 8
Check a internet connetion is up. If it isn't write a log.

This command are using by me for checking connection with Internet. Show Sample Output
This is sample output - yours may be different.
```
8.8.8.8 ping failed at 12/05/11 12:48:28
8.8.8.8 ping failed at 12/05/11 12:48:41
```
-1

while true; do /bin/ping -q -c1 -w3 8.8.8.8 2>&1 > /dev/null || echo "8.8.8.8 ping failed at $(date +%d/%m/%y) $(date +%H:%M:%S)" >> /var/log/ping.log; sleep 10; done &

Arkey · 2011-05-12 01:51:07 4
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Show numerical values for each of the 256 colors in bash

Same as http://www.commandlinefu.com/commands/view/5876, but for bash. This will show a numerical value for each of the 256 colors in bash. Everything in the command is a bash builtin, so it should run on any platform where bash is installed. Prints one color per line. If someone is interested in formatting the output, paste the alternative.

Create new user with home dir and given password

The crypt function takes a password, key, as a string, and a salt character array which is described below, and returns a printable ASCII string which starts with another salt. It is believed that, given the output of the function, the best way to find a key that will produce that output is to guess values of key until the original value of key is found. from http://en.wikipedia.org/wiki/Crypt_(Unix)

watch your network load on specific network interface

-n means refresh frequency you could change eth0 to any interface you want, like wlan0

unbuffered tcpdump

Sometimes the question comes up: How to get unbuffered tcpdump output into the next program in the pipe? i.e. if your OS forces you to wait for the buffer to fill before the next program sees any of the output If you use -Uw- then you can't use -A (or -X or -XX) at the same time. When the question comes up, I've never seen anyone suggest this simple solution: chaining 2 tcpdump instances.

kill all foo process

Kill all processes with foo in them. Similar to pkill but more complete and also works when there is no pkill command. Works on almost every Linux/Unix platform I have tried.

Disassemble some shell code

This one liner takes the shell code that you can grab off of the web and disassemble it into readable assembly so you can validate the code does what it says, before using it. The shell code in the above example is from http://www.shell-storm.org/shellcode/files/shellcode-623.php You can replace "-s intel" with "-s att" to get AT&T format disassembly.

Write on the console without being registered

just use a space to prevent commands from being recorded in bash's history on most systems

Recursive chmod all *.sh files within the current directory

This command is useful to recursively make executable all "*.sh" files in a folder. This command is useful to apply chmod recursively in a determined kind of file.

Simple Video Surveillance by email

This takes a picture (with the web cam) every 5 minutes, and send the picture to your e-mail. Some systems support mail -a "References: " so that all video surveillance emails are grouped in a single email thread. To keep your inbox clean, it is still possible to filter and move to trash video surveillance emails (and restore these emails only if you really get robbed!) For instance with Gmail, emails sent to me+trash@gmail.com can be filtered with "Matches: DeliveredTo:me+trash@gmail.com"

Recursively list all of the files in a directory, group them by extension and calculate the average of the file sizes in each group

Here's an annotated version of the command, using full-names instead of aliases. It is exactly equivalent to the short-hand version. # Recursively list all the files in the current directory. Get-ChildItem -Recurse | # Filter out the sub-directories themselves. Where-Object { return -not $_.PsIsContainer; } | # Group the resulting files by their extensions. Group-Object Extension | # Pluck the Name and Count properties of each group and define # a custom expression that calculates the average of the sizes # of the files in that group. # The back-tick is a line-continuation character. Select-Object ` Name, Count, @{ Name = 'Average'; Expression = { # Average the Length (sizes) of the files in the current group. return ($_.Group | Measure-Object -Average Length).Average; } } | # Format the results in a tabular view, automatically adjusted to # widths of the values in the columns. Format-Table -AutoSize ` @{ # Rename the Name property to something more sensible. Name = 'Extension'; Expression = { return $_.Name; } }, Count, @{ # Format the Average property to display KB instead of bytes # and use a formatting string to show it rounded to two decimals. Name = 'Average Size (KB)'; # The "1KB" is a built-in constant which is equal to 1024. Expression = { return $_.Average / 1KB }; FormatString = '{0:N2}' }

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Commands using sleep (289)

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