Newbie: port

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Dear all,
On what port does postgre run?
How do I know if postgre already running on my box?
I nmaped and the result was:
Starting nmap V. 3.00 ( www.insecure.org/nmap/ )
Interesting ports on localhost (127.0.0.1):
(The 1583 ports scanned but not shown below are in state: closed)
Port State Service
21/tcp open ftp
22/tcp open ssh
25/tcp open smtp
80/tcp open http
110/tcp open pop-3
111/tcp open sunrpc
139/tcp open netbios-ssn
143/tcp open imap2
443/tcp open https
631/tcp open ipp
783/tcp open hp-alarm-mgr
993/tcp open imaps
2049/tcp open nfs
3306/tcp open mysql
6000/tcp open X11
10000/tcp open snet-sensor-mgmt
32770/tcp open sometimes-rpc3
32771/tcp open sometimes-rpc5
Thanks
- --
Fajar http://linux.arinet.org
Linux mdk91.sistek.kom 2.4.21-0.13mdk GNU/Linux
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(A) Fast
(B) Efficient
(C) Stable
(D) Windows 98 (counts as two)
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