netstat命令
usage: netstat [-veenNcCF] [<Af>] -r netstat {-V|--version|-h|--help} netstat [-vnNcaeol] [<Socket> ...] netstat { [-veenNac] -I[<Iface>] | [-veenNac] -i | [-cnNe] -M | -s } [delay] -r, --route display routing table -I, --interfaces=<Iface> display interface table for <Iface> -i, --interfaces display interface table -g, --groups display multicast group memberships -s, --statistics display networking statistics (like SNMP) -M, --masquerade display masqueraded connections -v, --verbose be verbose -n, --numeric don't resolve names --numeric-hosts don't resolve host names --numeric-ports don't resolve port names --numeric-users don't resolve user names -N, --symbolic resolve hardware names -e, --extend display other/more information -p, --programs display PID/Program name for sockets -c, --continuous continuous listing -l, --listening display listening server sockets -a, --all, --listening display all sockets (default: connected) -o, --timers display timers -F, --fib display Forwarding Information Base (default) -C, --cache display routing cache instead of FIB -T, --notrim stop trimming long addresses -Z, --context display SELinux security context for sockets
<Iface>: Name of interface to monitor/list. <Socket>={-t|--tcp} {-u|--udp} {-S|--sctp} {-w|--raw} {-x|--unix} --ax25 --ipx --netrom <AF>=Use '-A <af>' or '--<af>'; default: inet List of possible address families (which support routing): inet (DARPA Internet) inet6 (IPv6) ax25 (AMPR AX.25)