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sockstat(1) [netbsd man page]

SOCKSTAT(1)						    BSD General Commands Manual 					       SOCKSTAT(1)

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 <>. This manual page was written by Dag-Erling Smorgrav <> and was adapted to match the NetBSD implementation by Andrew Brown <>. BSD
July 14, 2006 BSD

Check Out this Related Man Page

SS(8)							      System Manager's Manual							     SS(8)

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, <>. This manual page was written by Michael Prokop <> for the Debian project (but may be used by others). SS(8)
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