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Full Discussion: How to detect and fix why crontab job is not executed?
Top Forums Shell Programming and Scripting How to detect and fix why crontab job is not executed? Post 303031856 by Ophiuchus on Wednesday 6th of March 2019 04:50:15 PM
Old 03-06-2019
Quote:
Originally Posted by Don Cragun
I don't remember the name of the log file that would contain the information about when the system changes states, but there has to be one. And, as has already been stated, look for cron's log file as well.

A quick and simple check would be to see what output you get from the command:
Code:
uptime

when run on that server. If it says the system has been up longer than when your last 6am cron job was skipped, that isn't your problem.
Thanks for your answer Don.

On SunOS server where I copy the files from the uptime command gives this output.

Code:
# uptime
  4:28pm  up 839 day(s),  5:42,  1 user,  load average: 0.08, 0.07, 0.07

 

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LEARN ABOUT LINUX

uptime

UPTIME(1)							Linux User's Manual							 UPTIME(1)

NAME

       uptime - Tell how long the system has been running.

SYNOPSIS

       uptime
       uptime [-V]

DESCRIPTION

       uptime  gives  a one line display of the following information.	The current time, how long the system has been running, how many users are
       currently logged on, and the system load averages for the past 1, 5, and 15 minutes.

       This is the same information contained in the header line displayed by w(1).

       System load averages is the average number of processes that are either in a runnable or uninterruptable state.	A process  in  a  runnable
       state  is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for
       disk.  The averages are taken over the three time intervals.  Load averages are not normalized for the number of CPUs in  a  system,  so  a
       load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.

FILES

       /var/run/utmp
	      information about who is currently logged on

       /proc  process information

AUTHORS

       uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>.

       Please send bug reports to <albert@users.sf.net>

SEE ALSO

       ps(1), top(1), utmp(5), w(1)

Cohesive Systems						    26 Jan 1993 							 UPTIME(1)
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