SOCKSTAT(1) BSD General Commands Manual SOCKSTAT(1)NAME
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
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 data-
gram) 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 fstat(1), netstat(1), inet(4), inet6(4), unix(4)HISTORY
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
Check Out this Related Man Page
SS(8) System Manager's Manual SS(8)NAME
ss - another utility to investigate sockets
ss [options] [ FILTER ]
ss is used to dump socket statistics. It allows showing information similar to netstat. It can display more TCP and state informations
than other tools.
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
Show summary of options.
Output version information.
Do now try to resolve service names.
Try to resolve numeric address/ports.
Display all sockets.
Display listening sockets.
Show timer information.
Show detailed socket information
Show socket memory usage.
Show process using socket.
Show internal TCP information.
Print summary statistics. This option does not parse socket lists obtaining summary from various sources. It is useful when amount
of sockets is so huge that parsing /proc/net/tcp is painful.
Display only IP version 4 sockets (alias for -f inet).
Display only IP version 6 sockets (alias for -f inet6).
Display PACKET sockets.
Display only TCP sockets.
Display only UDP sockets.
Display only DCCP sockets.
Display only RAW sockets.
Display only Unix domain sockets.
-f FAMILY, --family=FAMILY
Display sockets of type FAMILY. Currently the following families are supported: unix, inet, inet6, link, netlink.
-A QUERY, --query=QUERY
List of socket tables to dump, separated by commas. The following identifiers are understood: all, inet, tcp, udp, raw, unix,
packet, netlink, unix_dgram, unix_stream, packet_raw, packet_dgram.
Do not display anything, just dump raw information about TCP sockets to FILE after applying filters. If FILE is - stdout is used.
-F FILE, --filter=FILE
Read filter information from FILE. Each line of FILE is interpreted like single command line option. If FILE is - stdin is used.
FILTER := [ state TCP-STATE ] [ EXPRESSION ]
Please take a look at the official documentation (Debian package iproute-doc) for details regarding filters.
ss -t -a
Display all TCP sockets.
ss -u -a
Display all UDP sockets.
ss -o state established '( dport = :ssh or sport = :ssh )'
Display all established ssh connections.
ss -x src /tmp/.X11-unix/*
Find all local processes connected to X server.
ss -o state fin-wait-1 '( sport = :http or sport = :https )' dst 193.233.7/24
List all the tcp sockets in state FIN-WAIT-1 for our apache to network 193.233.7/24 and look at their timers.
SEE ALSO ip(8), /usr/share/doc/iproute-doc/ss.html (package iproutedoc)
ss was written by Alexey Kuznetosv, <email@example.com>.
This manual page was written by Michael Prokop <firstname.lastname@example.org> for the Debian project (but may be used by others).