ss(8) - phpMan

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SS(8)                                                                    SS(8)

       ss - another utility to investigate sockets

       ss [options] [ FILTER ]

       ss is used to dump socket statistics. It allows showing information similar to net-
       stat.  It can display more TCP and state informations than other tools.

       When no option is used ss displays a list of open non-listening  TCP  sockets  that
       have established connection.

       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 both listening and non-listening (for  TCP  this  means  established
              connections) sockets.

       -l, --listening
              Display only listening sockets (these are omitted by default).

       -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 (alias for -f link).

       -t, --tcp
              Display TCP sockets.

       -u, --udp
              Display UDP sockets.

       -d, --dccp
              Display DCCP sockets.

       -w, --raw
              Display RAW sockets.

       -x, --unix
              Display Unix domain sockets (alias for -f unix).

       -f FAMILY, --family=FAMILY
              Display  sockets  of type FAMILY.  Currently the following families are sup-
              ported: unix, inet, inet6, link, netlink.

       -A QUERY, --query=QUERY, --socket=QUERY
              List of socket tables to dump, separated by commas.  The  following  identi-
              fiers  are  understood:  all,  inet,  tcp,  udp, raw, unix, packet, netlink,
              unix_dgram, unix_stream, packet_raw, packet_dgram.

       -D FILE, --diag=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.

       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.

       ip(8), /usr/share/doc/iproute-doc-2.6.32/ (package iproute-doc)

       ss was written by Alexey Kuznetosv, <kuznet AT>.

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


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