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Full Discussion: Loop without a delay
Top Forums Shell Programming and Scripting Loop without a delay Post 302898745 by zulfi123786 on Wednesday 23rd of April 2014 02:00:00 PM
Old 04-23-2014
Thanks for the reply,
Code:
 
 
filefound=0
 
while [[ $filefound -eq 0 ]]
do
 
if [[ -f abc.dat ]]
then
mv abc.dat xyz.dat
filefound=1
fi
 
done

In the above if the file is not found the loop keeps iterating, adding a sleep command will introduce some wait between iterations. Just wondering if by adding the sleep will add any advantage in terms reducing processor load OR it just doesn't make any difference.

Thanks
Zulfi
 

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TLOAD(1)							   User Commands							  TLOAD(1)

NAME
tload - graphic representation of system load average SYNOPSIS
tload [options] [tty] DESCRIPTION
tload prints a graph of the current system load average to the specified tty (or the tty of the tload process if none is specified). OPTIONS
-s, --scale number The scale option allows a vertical scale to be specified for the display (in characters between graph ticks); thus, a smaller value represents a larger scale, and vice versa. -d, --delay seconds The delay sets the delay between graph updates in seconds. -h, --help Display this help text. -V, --version Display version information and exit. FILES
/proc/loadavg load average information SEE ALSO
ps(1), top(1), uptime(1), w(1) BUGS
The -d delay option sets the time argument for an alarm(2); if -d 0 is specified, the alarm is set to 0, which will never send the SIGALRM and update the display. AUTHORS
Branko Lankester, David Engel <david@ods.com>, and Michael K. Johnson <johnsonm@redhat.com>. REPORTING BUGS
Please send bug reports to <procps@freelists.org> procps-ng June 2011 TLOAD(1)
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