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

By: hemanth

2009-08-22 09:34:27

awk ping tr ping

4 Alternatives + Submit Alt

Ping scanning without nmap

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 Show Sample Output
This is sample output - yours may be different.
```
64 bytes from 10.1.1.1: icmp_seq=1 ttl=255 time=0.622 ms
64 bytes from 10.1.1.2: icmp_seq=1 ttl=64 time=0.078 ms
64 bytes from 10.1.1.50: icmp_seq=1 ttl=128 time=0.204 ms
64 bytes from 10.1.1.250: icmp_seq=1 ttl=128 time=0.344 ms
```
14

for i in {1..254}; do ping -c 1 -W 1 10.1.1.$i | grep 'from'; done

SuperJediWombat · 2010-04-07 16:57:53 8
Ping sweep without NMAP

Waits for all pings to complete and returns ip with mac address
This is sample output - yours may be different.
3

(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)

smoky · 2014-04-02 11:20:57 11
Ping sweep without NMAP

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)
This is sample output - yours may be different.
0

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

tempelorg · 2012-07-25 12:07:15 4
Ping scanning without nmap

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).. Show Sample Output
This is sample output - yours may be different.
```
Answer from: 10.0.0.1
Answer from: 10.0.0.2
Answer from: 10.0.0.4
Answer from: 10.0.0.5
Answer from: 10.0.0.6
```
-2

prefix="10.0.0" && for i in `seq 25`; do ping -c 1 $prefix.$i &> /dev/null && echo "Answer from: $prefix.$i" ; done

xeor · 2010-04-07 17:17:21 5

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

Hal_Pomeranz · 789 weeks and 4 days ago

or... you can install fping. fping -g 192.168.0.0/24

dragonauta · 625 weeks and 3 days 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?

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