Re: understanding netstat output

[Carl Mummert <mummert@cs.wcu.edu>]

>Active UNIX domain sockets (w/o servers)
>Proto RefCnt Flags       Type       State         I-Node Path
>unix  2      [ ]         STREAM                   824491 /tmp/.X11-unix/X0
>unix  2      [ ]         STREAM     CONNECTED     824490 
>unix  2      [ ]         STREAM                   824228 /tmp/.X11-unix/X0
>unix  2      [ ]         STREAM     CONNECTED     824227 
>unix  2      [ ]         STREAM                   824171 /tmp/.X11-unix/X0
>unix  2      [ ]         STREAM     CONNECTED     824147 
>unix  2      [ ]         STREAM                   715277 /dev/log
>unix  2      [ ]         STREAM     CONNECTED     715276 
>unix  2      [ ]         STREAM                   2095   /dev/log
>unix  2      [ ]         STREAM     CONNECTED     2094   
>unix  2      [ ]         STREAM                   1158   /dev/log
>unix  2      [ ]         STREAM     CONNECTED     1157   
>unix  2      [ ]         STREAM                   1126   /dev/log
>unix  2      [ ]         STREAM     CONNECTED     1125   
>unix  1      [ ]         STREAM                   1054
>

These are 'unix domain' sockets.  They are a seperate protocol from
tcp/ip, and AFAIK are mainly unsed by X11.  

Any comprehensive unix network programming book would discuss them,
and the advantages/disadvantages of them over tcp/ip.  But for normal
users, they are jsut a different type of socket that some programs use.

Carl