SS(8)                                                                                                                      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-2.6.35/ss.ps (package iproute-doc)

AUTHOR
       ss was written by Alexey Kuznetosv, <kuznetATms2.ru>.

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



                                                                                                                           SS(8)