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ss (8)
  • ss (8) ( Русские man: Команды системного администрирования )
  • >> ss (8) ( Linux man: Команды системного администрирования )
  •  

    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 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 iproute╜doc)  

    AUTHOR

    ss was written by Alexey Kuznetosv, <[email protected]>.

    This manual page was written by Michael Prokop <[email protected]> for the Debian project (but may be used by others).


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    USAGE EXAMPLES
    SEE ALSO
    AUTHOR


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