Very Computer

I saw a method of how to set up a cron entry to synchronize my CMOS  clock  to
the NIST atomic clock:

#Sync with NIST clock
0 30 0 * * * *      /usr/sbin/netdate 132.163.135.130 >& /dev/null

#Write new time to CMOS
5 30 * * * *        /sbin/clock -w

Trouble is, I apparently don't have the "netdate" and "clock"  commands.   I'm
running RedHat 4.0 (kernel 2.0.18.

Anyone know more about this?

                                          Thanks.

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        1) The command you are probably looking for is "rdate" (for netdate),
           but clock should definitely be in /sbin.

        2) The host "time-A.timefreq.bldrdoc.gov" has been very unreliable
           lately.  I think as a practical matter that it is better to pick
           a machine on your local network that is reliable and sync your
           clock to that machine.

        3) The following is a nifty trick that uses commonly available
           commands (if you can't find rdate or netdate):

date -s "`telnet somehost 13 2>&1 | gawk '/Escape character/ {getline;print}'`"

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"netdate" appears to be on the usual FTP sites under it's own name.

Personally I use "ntpdate" that comes with "xntpd" but I don't think
there's a significant difference.

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