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Ping sweep without NMAP

Terminal - Ping sweep without NMAP
for i in `seq 1 255`; do ping -c 1 10.10.10.$i | tr \\n ' ' | awk '/1 received/ {print $2}'; done
2009-08-22 09:34:27
User: hemanth
Functions: awk ping tr
2
Ping sweep without NMAP

Ping sweep without NMAP

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives
for i in {1..254}; do ping -c 1 -W 1 10.1.1.$i | grep 'from'; done
2010-04-07 16:57:53
Functions: grep ping
Tags: ping
14

Usefull for when you don't have nmap and need to find a missing host.

Pings all addresses from 10.1.1.1 to 10.1.1.254, modify for your subnet.

Timeout set to 1 sec for speed, if running over a slow connection you should raise that to avoid missing replies.

This will clean up the junk, leaving just the IP address:

for i in {1..254}; do ping -c 1 -W 1 10.1.1.$i | grep 'from' | cut -d' ' -f 4 | tr -d ':'; done

(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
1

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

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

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)

prefix="10.0.0" && for i in `seq 25`; do ping -c 1 $prefix.$i &> /dev/null && echo "Answer from: $prefix.$i" ; done
2010-04-07 17:17:21
User: xeor
Functions: echo ping
Tags: ping
-2

Not really an easier solution. But an example using && for (if last command returned 0). You can use || for (if last command returned other than 0)..

Know a better way?

If you can do better, submit your command here.

What others think

Glad you're enjoying our blog. In future, however, it would be nice if you gave some attribution when you're posting our content here on commandlinefu. This one is from http://blog.commandlinekungfu.com/2009/03/episode-6-command-line-ping-sweeper.html

Comment by Hal_Pomeranz 310 weeks ago

or... you can install fping.

fping -g 192.168.0.0/24

Comment by dragonauta 146 weeks ago

Great scripts, but I'm looking for something similar for ASH (in BusyBox v1.15.3).

Unfortunately none of the above works with ash.

Anyone who can help?

Comment by zakhooi 20 weeks and 3 days ago

Your point of view

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