Re: sleeping for 30 seconds

[Jan Grant]

On Fri, 26 Mar 2004, Richard P. Williamson wrote:

 What's a good sh algorithm for the above?  (assume  10
 seconds indicates error condition and a 50 second sleep
 between iterations when necessary, and I don't need a
 'five attempts then sleep' thing).  Also, assume I've
 simplified for the home audience.  The sh script is
 lots more involved then the example above implies.

You might, if the possibility is there, want to use the exit value of
the main process to indicate errors, which is perhaps a little more
reliable.

If you want the time in seconds between two points, you might try
something like this:

start_time=`date +%s`
# ... do something
end_time=`date +%s`
time_taken=$(($end_time - $start_time))



-- 
jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/
Tel +44(0)117 9287088 Fax +44 (0)117 9287112 http://ioctl.org/jan/
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Re: sleeping for 30 seconds

[Richard P. Williamson]

At 13:08 26/03/2004, Jan Grant wrote:
On Fri, 26 Mar 2004, Richard P. Williamson wrote:

You might, if the possibility is there, want to use the exit value of
the main process to indicate errors, which is perhaps a little more
reliable.

Except it doesn't tell me how long it ran for before it falling
over, which is the bit I need to look at.

If you want the time in seconds between two points, you might try
something like this:

start_time=`date +%s`
# ... do something
end_time=`date +%s`
time_taken=$(($end_time - $start_time))

That's what I'm looking for, thanks!

(that, and )

if [ $time_taken -lt 10 ]; then
  sleep 50
fi

Regards, and thanks!
rip 

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