NAME
sockstat
—
list open sockets
SYNOPSIS
sockstat |
[-46clnu ] [-f
address_family] [-p
ports] |
DESCRIPTION
Thesockstat
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.
-f
address_family- Limit listed sockets to those of the specified
address_family. The following address families are
recognized: inet, for
AF_INET
; inet6, forAF_INET6
; and local or unix, forAF_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.
SEE ALSO
HISTORY
The sockstat
command appeared in
FreeBSD 3.1. It was then rewritten for
NetBSD 3.0.
AUTHORS
This version of the sockstat
command was
written by Andrew Brown
⟨atatat@NetBSD.org⟩. This manual page was written by
Dag-Erling Smørgrav
<des@FreeBSD.org> and
was adapted to match the NetBSD implementation by
Andrew Brown ⟨atatat@NetBSD.org⟩.