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List the open sockets
sockstat [-46clnu] [-f address_family] [-p ports]
All supported platforms.
- Show AF_INET (IPv4) sockets.
- Show AF_INET6 (IPv6) sockets.
- Show connected sockets.
- -f address_family
- Limit the 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.
- Show the listening sockets.
- Numeric output only. No attempt is made to look up symbolic names for addresses and ports.
- -p ports
- Show only Internet sockets if either the local or foreign port number is in the specified list. The ports argument is a comma-separated list of port numbers and ranges specified as a first and a last port separated by a dash.
- Show AF_LOCAL (UNIX) sockets.
The sockstat command lists open Internet or UNIX domain sockets.
If you don't specify any of the -4, -6, or -u options, sockstat lists the sockets in all three domains.
If you don't specify either of the -c or -l, sockstat lists both listening and connected sockets, as well as those sockets that are in neither state.
The information listed for each socket is:
- The user who owns the socket.
- The command that holds the socket.
- The process ID of the command that holds the socket.
- The file descriptor number of the socket.
- 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 to which the local end of the socket is bound (see getsockname() in the Neutrino Library Reference). For bound UNIX sockets, it's the socket's filename or -.
- FOREIGN ADDRESS
- The address to which the foreign end of the socket is bound (see getpeername()), or - for unconnected UNIX sockets.