NAME

       sockstat — list open sockets

SYNOPSIS

       sockstat [-46clhu] [-p ports] [-P pid|process] [-U uid|user] [-G gid|group] [-R protocol]

DESCRIPTION

       The sockstat command lists open Internet or Unix domain sockets.

       The following options are available:

       -4          Show IPv4 sockets only.

       -6          Show IPv6 sockets only.

       -u          Also show unix sockets.

       -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.

       -R protocol
                   Only show sockets of the specified protocol.  The protocol argument is either  'raw',  'tcp',
                   'udp' or 'unix'

       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 Smørgrav <des@FreeBSD.org>.

       The sockstat command was ported to Linux by William Pitcock <nenolod@nenolod.net>.

Debian                                            May 18, 2008                                       SOCKSTAT(1)