最終更新:2023-12-05 (火) 05:08:15 (81d)  

ss
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More socket statsics:

another utility to investigate sockets

  • ss -nltu?

help

  • Usage: ss [ OPTIONS ]
           ss [ OPTIONS ] [ FILTER ]
       -h, --help          this message
       -V, --version       output version information
       -n, --numeric       don't resolve service names
       -r, --resolve       resolve host names
       -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
           --tipcinfo      show internal tipc socket information
       -s, --summary       show socket usage summary
           --tos           show tos and priority information
       -b, --bpf           show bpf filter socket information
       -E, --events        continually display sockets as they are destroyed
       -Z, --context       display process SELinux security contexts
       -z, --contexts      display process and socket SELinux security contexts
       -N, --net           switch to the specified network namespace name
    
       -4, --ipv4          display only IP version 4 sockets
       -6, --ipv6          display only IP version 6 sockets
       -0, --packet        display PACKET sockets
       -t, --tcp           display only TCP sockets
       -S, --sctp          display only SCTP 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
           --tipc          display only TIPC sockets
           --vsock         display only vsock sockets
       -f, --family=FAMILY display sockets of type FAMILY
           FAMILY := {inet|inet6|link|unix|netlink|vsock|tipc|xdp|help}
    
       -K, --kill          forcibly close sockets, display what was closed
       -H, --no-header     Suppress header line
       -O, --oneline       socket's data printed on a single line
    
       -A, --query=QUERY, --socket=QUERY
           QUERY := {all|inet|tcp|udp|raw|unix|unix_dgram|unix_stream|unix_seqpacket|packet|netlink|vsock_stream|vsock_dgram|tipc}[,QUERY]
    
       -D, --diag=FILE     Dump raw information about TCP sockets to FILE
       -F, --filter=FILE   read filter information from FILE
           FILTER := [ state STATE-FILTER ] [ EXPRESSION ]
           STATE-FILTER := {all|connected|synchronized|bucket|big|TCP-STATES}
             TCP-STATES := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|closed|close-wait|last-ack|listening|closing}
              connected := {established|syn-sent|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}
           synchronized := {established|syn-recv|fin-wait-{1,2}|time-wait|close-wait|last-ack|closing}
                 bucket := {syn-recv|time-wait}
                    big := {established|syn-sent|fin-wait-{1,2}|closed|close-wait|last-ack|listening|closing}
    

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