11-01-2010
Get Used Port List
Hi All-
How to get used port list in UNIX?
Thanks,
Mani Muthu
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LEARN ABOUT LINUX
sockstat
SOCKSTAT(1) BSD General Commands Manual SOCKSTAT(1)
NAME
sockstat -- list open sockets
SYNOPSIS
sockstat [-clh] [-p ports] [-P pid|process] [-U uid|user] [-G gid|group]
DESCRIPTION
The sockstat command lists open Internet or UNIX domain sockets.
The following options are available:
-c Show connected sockets.
-l Show listening sockets.
-h Show a usage summary.
-p ports Only show Internet sockets if either the local or foreign port number is on the specified list. The ports argument is a comma-
separated list of port numbers and ranges specified as first and last port separated by a dash.
-P pid|process
Only show sockets of the specified pid|process. The pid|process argument is a process name or pid.
-U uid|user
Only show sockets of the specified uid|user. The uid|user argument is a username or uid.
-G gid|group
Only show sockets of the specified gid|group. The gid|group argument is a groupname or gid.
If neither -c or -l is specified, sockstat will list both listening and connected sockets.
The information listed for each socket is:
USER The user who owns the socket.
COMMAND The command which holds the socket.
PID The process ID of the command which holds the socket.
FD The file descriptor number of the socket.
PROTO The transport protocol associated with the socket for Internet sockets, or the type of socket (stream or datagram) for UNIX
sockets.
LOCAL ADDRESS For Internet sockets, this is the address the local end of the socket is bound to (see getsockname(2)). For bound UNIX
sockets, it is the socket's filename. For other UNIX sockets, it is a right arrow followed by the endpoint's filename, or
``??'' if the endpoint could not be determined.
FOREIGN ADDRESS (Internet sockets only) The address the foreign end of the socket is bound to (see getpeername(2)).
SEE ALSO
netstat(1), protocols(5)
HISTORY
The sockstat command appeared in FreeBSD 3.1.
AUTHORS
The sockstat command and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>.
The sockstat command was ported to Linux by William Pitcock <nenolod@nenolod.net>.
BSD
May 18, 2008 BSD