Quickly ping range of IP adresses and return only those that are online

{ for i in {1..254}; do ping -c 1 -W 1 192.168.1.$i & done } | grep "64 bytes"
Tested in Debian, ymmv. - c 1 : send only one ping;; -W 1: wait for one second and then exit ping, assuming target IP is not available; change as needed (-W 0.5 for half a second, smaller or greater value depending on network speed/latency)

1
By: test666v2
2021-04-25 17:52:30

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What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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