SOCKSTAT(1) BSD General Commands Manual SOCKSTAT(1)
sockstat -- list open sockets
sockstat [-46clnu] [-f address_family] [-p ports]
The sockstat command lists open Internet or UNIX domain sockets.
The following options are available:
-4 Show AF_INET (IPv4) sockets.
-6 Show AF_INET6 (IPv6) sockets.
-c Show connected sockets.
Limit listed sockets to those of the specified address_family. The following
address families are recognized: inet, for AF_INET; inet6, for AF_INET6; and
local or unix, for AF_LOCAL.
-l Show listening sockets.
-n Numeric output only. No attempt will be made to look up symbolic names for
addresses and ports.
-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.
-u Show AF_LOCAL (UNIX) sockets.
If neither -4, -6, nor -u are specified, sockstat will list sockets in all three domains.
If neither -c nor -l are specified, sockstat will list both listening and connected sockets,
as well as those sockets that are in neither state.
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, seqpacket or datagram) for UNIX sockets.
LOCAL ADDRESS For Internet sockets, this is the address to which the local end of the
socket is bound (see getsockname(2)). For bound UNIX sockets, it is the
socket's filename or ``-''.
FOREIGN ADDRESS The address to which the foreign end of the socket is bound (see
getpeername(2)) or ``-'' for unconnected UNIX sockets.
fstat(1), netstat(1), inet(4), inet6(4), unix(4)
The sockstat command appeared in FreeBSD 3.1. It was then rewritten for NetBSD 3.0.
This version of the sockstat command was written by Andrew Brown <atatat@NetBSD.org>. This
manual page was written by Dag-Erling Smorgrav <des@FreeBSD.org> and was adapted to match
the NetBSD implementation by Andrew Brown <atatat@NetBSD.org>.
BSD July 14, 2006 BSD