CODEWITHSUNDEEP
parsinglua
Murad
Murad

Reputation: 99

Lua. look for an associated (with MAC) IP in dhcp.leases

I am looking for a Lua replacement for the following bash script:

MAC="d4:be:d9:3a:78:88"
IP=`grep $MAC /tmp/dhcp.leases | awk {'print $3'}`

echo $IP

/tmp/dhcp.leases looks like:

1497518739 d4:be:d9:3a:78:88 192.168.96.180 DESKTOP-2VECMJ7 01:d4:be:d9:3a:78:88

Upvotes: 0

Views: 158

Answers (1)

lhf
lhf

Reputation: 72312

After reading the file into a Lua string, extracting the IP address is simple:

function extract(text,mac)
  return text:match(" "..mac.." (.-) ")
end

Upvotes: 1

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