Linux command-SS: View socket Statistics

Command format

SS [Options] [ FILTER ]

Command parameters

-H,--help
Displays help information.

-V,--version
Displays version information.

-N,--numeric
The service name is not resolved.

-R,--resolve
Try to parse the address and port in digital form.

-A,--all
All sockets are displayed.

-L,--listening
Displays the sockets for all listening states.

-O,--options
Displays timer information.

-E,--extended
Displays detailed socket information.

-M,--memory
Displays memory usage for sockets.

-P,--processes
Displays processes that use sockets.

-I.,--info
Only TCP information is displayed.

-S,--summary
Displays statistics.

-4,--ipv4
Only IPV4 sockets are displayed, equivalent to the-F inet option.

-6,--ipv6
Only IPV6 sockets are displayed, equivalent to the-f inet6 option.

-0,--packet
Only PACKET sockets are displayed.

-T,--tcp
Only TCP sockets are displayed.

-U,--UDP
Only UDP sockets are displayed.

-D,--DCCP
Only DCCP sockets are displayed.

-W,--raw
Only RAW sockets are displayed.

-X,--unix
Only the sockets for Unix domains are displayed.

-F FAMILY,--family=family
Displays the FAMILY type of socket. Currently supported types are UNIX, inet, Inet6, Link, netlink.

-D FILE,--diag=file
does not display any information to dump the original TCP socket information to the specified file.
-F FILE,--filter=file

Reads the filter information from the specified file.

Instance

A) View all TCP connections

Ss-t -A State      recv-q send-q      Local address:port          Peer address:port   LISTEN     0                     ::: Eforward                 :::*       LISTEN     0                     :: 22181::                   :*       LISTEN     0::                     : 25992                   :::*       LISTEN     0      :      : ffff:127.0.0.1:9160                    :::*       LISTEN     0       :: FFFF : 10.1.228.166:9160                    :::*       LISTEN     0       fe80::43a:faff:fe00:11e:9160                    :::*       LISTEN     0      :                   : 1:9160                    :::*       LISTEN     0::                    : mysql                   :::*       LISTEN     0                     *:6379                     *:*
...

b) Displays the process information for the socket using the listening state.

SS-PL Recv-q send-q           Local address:port               Peer address:port   0      :::                          eforward                      :::*       0      50                          ::: 22181                        :::* 0-::                          25992                        :::*       0           :: ffff:127.0.0.1:9160                         :::* 0 ffff:10.1.228.166:9160:: £ º:                         :*       0    fe80::43a:faff:fe00 : 11e:9160                         :::* 0--:                        1:9160                         :::* 0:::                         mysql                        :::*       0                          *:6379                          *:*        Users: (("Redis-server", 43172,5) ...

c) Displays the statistics for the socket.

ss-s total:421 (kernel 458) TCP:   193 (estab, closed, orphaned 0, synrecv 0, timewait 55/0), ports 182Transport total< C2/>ip        ipv6*  458       -         -        RAW  0         0         0        UDP        7         8        TCP  135        124      INET      FRAG  0         0         

Linux command-SS: View socket Statistics