OPTIONS

OPTIONS is list of single letter options, using common unix conventions.

• -h - show help page
• -? - the same, of course
• -v, -V - print version of ss and exit
• -s - 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.
• -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 - read continuation of filter from FILE. Each line of FILE is interpreted like single command line option. If FILE is - stdin is used.
• -r - try to resolve numeric address/ports
• -n - do not try to resolve ports
• -o - show some optional information, f.e. TCP timers
• -i - show some infomration specific to TCP (RTO, congestion window, slow start threshould etc.)
• -e - show even more optional information
• -m - show extended information on memory used by the socket. It is available only with tcp_diag enabled.
• -p - show list of processes owning the socket
• -f FAMILY - default address family used for parsing addresses. Also this option limits listing to sockets supporting given address family. Currently the following families are supported: unix, inet, inet6, link, netlink.
• -4 - alias for -f inet
• -6 - alias for -f inet6
• -0 - alias for -f link
• -A LIST-OF-TABLES - 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.
• -x - alias for -A unix
• -t - alias for -A tcp
• -u - alias for -A udp
• -w - alias for -A raw
• -a - show sockets of all the states. By default sockets in states LISTEN, TIME-WAIT, SYN_RECV and CLOSE are skipped.
• -l - show only sockets in state LISTEN