SOCKSTAT(1) BSD General Commands Manual SOCKSTAT(1)NAME
sockstat -- list open sockets
sockstat [-clh] [-p ports] [-P pid|process] [-U uid|user] [-G gid|group]
The sockstat command lists open Internet or UNIX domain sockets.
The following options are available:
-c Show connected sockets.
-l Show listening sockets.
-h Show a usage summary.
-p ports Only show Internet sockets if either the local or foreign port number is on the specified list. The ports argument is a comma-
separated list of port numbers and ranges specified as first and last port separated by a dash.
Only show sockets of the specified pid|process. The pid|process argument is a process name or pid.
Only show sockets of the specified uid|user. The uid|user argument is a username or uid.
Only show sockets of the specified gid|group. The gid|group argument is a groupname or gid.
If neither -c or -l is specified, sockstat will list both listening and connected sockets.
The information listed for each socket is:
USER The user who owns the socket.
COMMAND The command which holds the socket.
PID The process ID of the command which holds the socket.
FD The file descriptor number of the socket.
PROTO The transport protocol associated with the socket for Internet sockets, or the type of socket (stream or datagram) for UNIX
LOCAL ADDRESS For Internet sockets, this is the address the local end of the socket is bound to (see getsockname(2)). For bound UNIX
sockets, it is the socket's filename. For other UNIX sockets, it is a right arrow followed by the endpoint's filename, or
``??'' if the endpoint could not be determined.
FOREIGN ADDRESS (Internet sockets only) The address the foreign end of the socket is bound to (see getpeername(2)).
SEE ALSO netstat(1), protocols(5)HISTORY
The sockstat command appeared in FreeBSD 3.1.
The sockstat command and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>.
The sockstat command was ported to Linux by William Pitcock <firstname.lastname@example.org>.
BSD May 18, 2008 BSD
Check Out this Related Man Page
SS(8) System Manager's Manual SS(8)NAME
ss - another utility to investigate sockets
ss [options] [ FILTER ]
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.
When no option is used ss displays a list of open non-listening TCP sockets that have established connection.
Show summary of options.
Output version information.
Do not try to resolve service names.
Try to resolve numeric address/ports.
Display both listening and non-listening (for TCP this means established connections) sockets.
Display only listening sockets (these are omitted by default).
Show timer information.
Show detailed socket information
Show socket memory usage.
Show process using socket.
Show internal TCP information.
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.
Show socket BPF filters (only administrators are allowed to get these information).
Display only IP version 4 sockets (alias for -f inet).
Display only IP version 6 sockets (alias for -f inet6).
Display PACKET sockets (alias for -f link).
Display TCP sockets.
Display UDP sockets.
Display DCCP sockets.
Display RAW sockets.
Display Unix domain sockets (alias for -f unix).
-f FAMILY, --family=FAMILY
Display sockets of type FAMILY. Currently the following families are supported: unix, inet, inet6, link, netlink.
-A QUERY, --query=QUERY, --socket=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, --diag=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.
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 /tmp/.X11-unix/*
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-3.10.0/ss.ps (package iproute-doc)
ss was written by Alexey Kuznetosv, <email@example.com>.
This manual page was written by Michael Prokop <firstname.lastname@example.org> for the Debian project (but may be used by others).