SOCKSTAT(1) BSD General Commands Manual SOCKSTAT(1)NAME
sockstat -- list open sockets
SYNOPSIS
sockstat [-46clnu] [-f address_family] [-p ports]
DESCRIPTION
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.
-f address_family
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 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.
AUTHORS
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
SYNOPSIS
ss [options] [ FILTER ]
DESCRIPTION
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.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
included below.
-h, --help
Show summary of options.
-V, --version
Output version information.
-n, --numeric
Do now try to resolve service names.
-r, --resolve
Try to resolve numeric address/ports.
-a, --all
Display all sockets.
-l, --listening
Display listening sockets.
-o, --options
Show timer information.
-e, --extended
Show detailed socket information
-m, --memory
Show socket memory usage.
-p, --processes
Show process using socket.
-i, --info
Show internal TCP information.
-s, --summary
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.
-4, --ipv4
Display only IP version 4 sockets (alias for -f inet).
-6, --ipv6
Display only IP version 6 sockets (alias for -f inet6).
-0, --packet
Display PACKET sockets.
-t, --tcp
Display only TCP sockets.
-u, --udp
Display only UDP sockets.
-d, --dccp
Display only DCCP sockets.
-w, --raw
Display only RAW sockets.
-x, --unix
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.
-D FILE
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.
USAGE EXAMPLES
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)
AUTHOR
ss was written by Alexey Kuznetosv, <kuznet@ms2.inr.ac.ru>.
This manual page was written by Michael Prokop <mika@grml.org> for the Debian project (but may be used by others).
SS(8)