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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands tagged ping from sorted by
Terminal - Commands tagged ping - 44 results
sajb {$ip="";$old=0;while(1){$up=test-connection -quiet -count 1 $ip;if($up-ne$old){$s=(date -u %s).split('.')[0]+' '+(date -f s).replace('T',' ')+' '+$ip+' '+$(if($up){'Up'}else{'Down'});echo $s|out-file -a $home\ping.txt;$old=$up}sleep 10}}

IMPORTANT: You need Windows PowerShell to run this command - in your Windows Command Prompt, type


Uses sajb to start a PowerShell background job that pings an IP host every 10 seconds.

Any changes in the host's Up/Down state is time-stamped and logged to a file.

Date/time stamps are logged in two formats: Unix and human-readable.

A while(1) loop repeats the test every 10 seconds by using the sleep command.

See the Sample Output for more detail.

I use this command to log Up/Down events of my Motorola SB6141 cable modem (

To end the logging, close the PowerShell window or use the "exit" command.

speakwhenup() { [ "$1" ] && PHOST="$1" || return 1; until ping -c1 -W2 $PHOST >/dev/null 2>&1; do sleep 5s; done; espeak "$PHOST is up" >/dev/null 2>&1; }
2014-11-26 10:22:18
User: aguslr
Functions: ping return sleep
Tags: ping beep espeak

This allows for sleeping in between pings. Also, espeak needs to be installed.

Mac OSX: ping -oc 30 > /dev/null && say "Google name server is up" || say "This host is down"
2014-08-01 15:44:57
User: raulyca
Functions: ping
Tags: ping beep

Audio acknowledgement for host availability.

When running the command from a Linux systems, you can use "festival" or "espeak" instead of "say".

(prefix="10.59.21" && for i in `seq 254`; do (sleep 0.5 && ping -c1 -w1 $prefix.$i &> /dev/null && arp -n | awk ' /'$prefix'.'$i' / { print $1 " " $3 } ') & done; wait)
2014-04-02 11:20:57
User: smoky
Functions: arp awk ping sleep
Tags: ping

Waits for all pings to complete and returns ip with mac address

fping -ga 2> /dev/null
2014-01-31 19:19:19
User: netaxiz
Tags: nmap ping

Will report back IP address's of all hosts that are UP.

nmap -sn
telnet 0 <port>
2012-11-16 03:38:49
User: somaddict
Functions: telnet

Super fast way to ftp/telnet/netcat/ssh/ping your loopback address for testing. The default route is simply reduced to 0.

for host in $HOSTNAMES; do ping -q -c3 $host && ssh $host 'command' & for count in {1..15}; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done &>/dev/null
for host in $MYHOSTS; do ping -q -c3 $H 2>&1 1>/dev/null && ssh -o 'AllowedAuthe ntications publickey' $host 'command1; command2' & for count in 1 2 3 4 5; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done
2012-11-13 23:12:27
User: a8ksh4
Functions: grep host jobs kill ping sleep ssh wc

Execute commands serially on a list of hosts. Each ssh connection is made in the background so that if, after five seconds, it hasn't closed, it will be killed and the script will go on to the next system.

Maybe there's an easier way to set a timeout in the ssh options...

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

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)

ping g.co|perl -ne'$|=/e=(\S+)/||next;(push@_,$1)>30&&shift@_;print"\r",(map{"\xe2\x96".chr(128+7*$_/(sort{$b<=>$a}@_)[0])." "}@_),"$1ms"'
2012-07-06 22:42:06
User: bartgrantham
Functions: perl ping

Nasty perl one-liner that provides a sparkline of ping times. If you want a different history than the last 30, just put that value in. It (ab)uses unicode to draw the bars, inspired by https://github.com/joemiller/spark-ping . It's not the most bug-free piece of code, but what it lacks in robustness it makes up for in capability. :)

If anyone has any ideas on how to make it more compact or better, I'd love to hear them.

I included a ping to google in the command just as an example (and burned up 10 chars doing it!). You should use it with: $ ping example.com | $SPARKLINE_PING_COMMAND

ping -b <broadcast address>
2012-05-21 16:55:33
User: OutputLogic
Functions: ping
Tags: ping broadcast

A simple way to find all machines on a network subnet is pinging a broadcast address (-b flag). First run ifconfig ifconfig. Then use "Bcast" address and '-b' flag in ping

mtr google.com
2012-02-19 22:27:48
User: d_voge

You need to have mtr installed on your host.

for i in {1..30}; do ping -t $i -c 1 google.com; done | grep "Time to live exceeded"
2012-02-19 13:37:04
User: fossilet
Functions: grep ping

This command uses ping to get the routers' IP addresses to the destination host as traceroute does. If you know what I mean..

ping1 IPaddr_or_hostname
2012-02-09 17:26:32
User: waibati
Tags: echo IP ping

export THISOS="`uname -s`"

if [ "$THISOS" = "SunOS" ]


export THISRELEASE="`uname -r`"

ping1() { ping -s $1 56 1 | egrep "^64"; }

elif [ "$THISOS" = "AIX" ]


export THISRELEASE="`uname -v`.`uname -r`"

ping1() { ping -w ${2:-1} $1 56 1 | egrep "^64"; }

elif [ "$THISOS" = "Linux" ]


export THISRELEASE="`uname -r`"

ping1() { ping -c 1 -w ${2:-1} $1 | egrep "^64"; }


echo -n "IP Address or Machine Name: "; read IP; ping -c 1 -q $IP >/dev/null 2>&1 && echo -e "\e[00;32mOnline\e[00m" || echo -e "\e[00;31mOffline\e[00m"
2012-02-09 07:00:03
User: crlf
Functions: echo ping read
Tags: bash echo IP ping

I have used single packet, and in a silent mode with no display of ping stats. This is with color and UI improvement to the http://www.commandlinefu.com/commands/view/10220/check-if-a-machine-is-online. It is as per the enhancements suggested.

ping -c 1 -q MACHINE_IP_OR_NAME >/dev/null 2>&1 && echo ONLINE || echo OFFLINE
2012-02-09 06:30:55
User: UnixNeko
Functions: echo ping
Tags: echo IP ping



c 1 limits to 1 pinging attempt

q makes the command quiet (or silent mode)

/dev/null 2>&1 is to remove the display

&& echo ONLINE is executed if previous command is successful (return value 0)

|| echo OFFLINE is executed otherwise (return value of 1 if unreachable or 2 if you're offline yourself).

I personally use this command as an alias with a predefined machine name but there are at least 2 improvements that may be done.

Asking for the machine name or IP

Escaping the output so that it displays ONLINE in green and OFFLINE in red (for instance).

10,30,50 * * * * ping -c1 -w3 >/dev/null
2012-02-06 14:54:15
User: bashrc
Functions: ping

Cleaner with a mailto assignment in crontab (if the command fails you get an email):

[email protected]

10,30,50 * * * * ping -q -c1 -w3 >/dev/null

10,30,50 * * * * ping -q -c1 -w3 | grep '1 received' - || mail -ne -s'Host not reachable' [email protected]
2012-02-06 10:42:46
User: knoppix5
Functions: grep mail ping

Every 20 minutes test if host with IP is 'dead' or not reachable.

The line should be put in your crontab file.

10,30,50 * * * * ping -q -c1 -w3 | grep '1 received' - || env DISPLAY=:0 xeyes
2012-02-06 09:40:11
User: knoppix5
Functions: env grep ping
Tags: ping host crontab

Every 20 minutes ping host with IP address If it's not 'alive' or not reachable, then display something eye-catching (here xeyes) on the desktop.

Hint for newbies: edit crontab with

crontab -e
ping -qc 10 server.tld | awk -F/ '/^rtt/ {print $5}'
2011-10-12 21:07:06
User: atoponce
Functions: awk ping
Tags: awk ping

Quick and dirty one-liner to get the average ping(1) time from a server.

ping HOSTNAME | while read pong; do echo "$(date): $pong"; done
nmap -sT -PN -vv <target ip>
2011-07-22 02:37:19
User: Richie086

Change the IP address from to the target machines ip address. Even if the target has ICMP (ping) blocked, it will show you what ports are open on the target. Very handy for situations where you know the target is up and online but wont respond to pings.

while true; do /bin/ping -q -c1 -w3 2>&1 > /dev/null || echo " ping failed at $(date +%d/%m/%y) $(date +%H:%M:%S)" >> /var/log/ping.log; sleep 10; done &
2011-05-12 01:51:07
User: Arkey
Functions: echo sleep

This command are using by me for checking connection with Internet.

ping -a IP-ADDRESS
2011-04-28 13:51:12
User: markussesser
Functions: ping

pcspkr have to be enabled!

modprobe pcspkr

xset b on