Wednesday, May 9, 2012

how to check in linux if port is occupied?

shell> netstat -a | grep <portno>

result should be somethings similar as following
_________________________________________________________________________________
unix  3      [ ]         STREAM     CONNECTED     3821446054 /var/run/dovecot/login/default
unix  3      [ ]         STREAM     CONNECTED     3821446052
unix  3      [ ]         STREAM     CONNECTED     3821446037
unix  3      [ ]         STREAM     CONNECTED     3821446036
unix  3      [ ]         STREAM     CONNECTED     3821442460 /var/run/dovecot/login/default
unix  3      [ ]         STREAM     CONNECTED     3821442450
unix  3      [ ]         STREAM     CONNECTED     3821442430
unix  3      [ ]         STREAM     CONNECTED     3821442429
________________________________________________________________________________




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