Check a port's state on a given host

checkport() { sudo nmap -sS -p $1 $2 }
Check to see if a port is open or closed on a given host.
Sample Output
$ checkport 80

Starting Nmap 5.21 ( ) at 2011-12-13 11:41 GMT
Nmap scan report for (
Host is up (0.17s latency).
rDNS record for
80/tcp open  http

Nmap done: 1 IP address (1 host up) scanned in 0.71 seconds

2011-12-13 11:46:15

What Others Think

The voting system on here sucks! Really wish people would backup their negative voting with a short comment as to why.
peterRepeater · 512 weeks and 4 days ago
i have a project with Mission Viejo Green Tree Service and this code is what I really need for this job. Thank you!
ChuckMathers · 7 weeks and 3 days ago

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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