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Full Discussion: netstat output
Special Forums IP Networking netstat output Post 302399714 by Ultrix on Monday 1st of March 2010 09:56:15 AM
Old 03-01-2010
Quote:
Originally Posted by pludi
Which OS, and which command exactly? Because on those systems that I have access to netstat outputs nice headers that should be easy to understand if you know a bit about networking.
I'm using Mac OS X Leopard. The output looks something like this (shortened for brevity's sake):

Code:
Active Internet connections
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp4      37      0  10.0.1.3.52023         textnews.news.ca.nntp  CLOSE_WAIT
udp4       0      0  10.20.1.118.ntp        *.*                    
udp4       0      0  *.58916                *.*                    
udp4       0      0  *.52844                *.*                    
udp4       0      0  *.58444                *.*                    
udp4       0      0  *.52618                *.*                    
udp4       0      0  *.55354                *.*                    
udp4       0      0  *.54759                *.*                    
udp4       0      0  *.*                    *.*                    
udp6       0      0  michael-gables-m.ntp   *.*                    
udp6       0      0  localhost.ntp          *.*                    
udp4       0      0  localhost.ntp          *.*                    
udp6       0      0  localhost.ntp          *.*                    
udp6       0      0  *.ntp                  *.*                    
udp4       0      0  *.ntp                  *.*                    
udp4   15489      0  *.ipp                  *.*                    
udp6       0      0  *.mdns                 *.*                    
udp4       0      0  *.mdns                 *.*                    
udp4       0      0  *.*                    *.*                    
udp4       0      0  *.*                    *.*                    
icm6       0      0  *.*                    *.*                    
Active LOCAL (UNIX) domain sockets
Address  Type   Recv-Q Send-Q    Inode     Conn     Refs  Nextref Addr
 430ecc0 stream      0      0        0  581fee0        0        0 /var/run/mDNSResponder
 581fee0 stream      0      0        0  430ecc0        0        0
 42ee110 stream      0      0        0  430eee0        0        0 /var/run/mDNSResponder
 430eee0 stream      0      0        0  42ee110        0        0
 42dab28 stream      0      0        0  411fb28        0        0 /var/run/mDNSResponder

I don't know what any of this means. I'm not much of a networking person, and I only know a little bit about TCP/IP (like what DNS and DHCP are), so this doesn't make much sense to me.
 

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LEARN ABOUT V7

ntp-wait

ntp-wait(1)							   User Commands						       ntp-wait(1)

NAME

       ntp-wait - Wait for ntpd to stabilize the system clock

SYNOPSIS

       ntp-wait [-flags] [-flag [value]] [--option-name[[=| ]value]]

       All arguments must be options.

DESCRIPTION

       ntp-wait will send at most num-tries queries to ntpd(8), sleeping for secs-between-tries after each status return that says ntpd(8) has not
       yet produced a synchronized and stable system clock.

       ntp-wait will do this quietly, unless the -v flag is provided.  This can be useful at boot time, to delay the  boot  sequence  until  after
       ntpd -g has set the time.

OPTIONS

       -n number, --tries=number
	      Number of times to check ntpd.  This option takes an integer number as its argument.  The default number for this option is:
		   100

		      The maximum number of times we will check ntpd to see if
		      it has been able to synchronize and stabilize the system clock.

       -s secs-between-tries, --sleep=secs-between-tries
	      How  long  to  sleep  between  tries.  This option takes an integer number as its argument.  The default secs-between-tries for this
	      option is:
		   6

		      We will sleep for secs-between-tries after each query
		      of ntpd that returns "the time is not yet stable".

       -v, --verbose
	      Be verbose.

		      By default, ntp-wait is silent.
		      With this option, ntp-wait will provide status information.

       -?, --help
	      Display usage information and exit.

       -!, --more-help
	      Pass the extended usage information through a pager.

       -v [{v|c|n --version [{v|c|n}]}]
	      Output version of program and exit.  The default mode is `v', a simple version.  The `c' mode will print copyright  information  and
	      `n' will print the full copyright notice.

EXIT STATUS

       One of the following exit values will be returned:

       0  (EXIT_SUCCESS)
	      Successful program execution.

       1  (EXIT_FAILURE)
	      The operation failed or the command syntax was not valid.

       70  (EX_SOFTWARE)
	      libopts had an internal operational error.  Please report it to autogen-users@lists.sourceforge.net.  Thank you.

AUTHORS

       Harlan Stenn

NOTES

       This document corresponds to version 4.2.8p13 of NTP.

       This manual page was AutoGen-erated from the ntp-wait option definitions.

ntp (4.2.8p13)							    20 Feb 2019 						       ntp-wait(1)
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