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Full Discussion: restarting a while loop
Top Forums UNIX for Dummies Questions & Answers restarting a while loop Post 38790 by oombera on Friday 25th of July 2003 10:39:39 AM
Old 07-25-2003
Hmm is this file going to be running all the time, every 15 seconds? Maybe you should set up a cron job.

If not, then try this:
Code:
changed="NO"

while [ $changed == "NO" ]; then
do
  echo $FIELDS > new_alert.tmp
  diff new_alert.tmp last_alert.tmp
  if [ $? -eq 0 ]; then
    echo No new alert messsages `date`
    sleep 15
    changed="YES"
  else
    continue
  fi
done

---------
Oh well, now you have two ways. Smilie
 

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yum-cron(8)															       yum-cron(8)

NAME
yum-cron - an interface to convieniently call yum from cron SYNOPSIS
yum-cron [config-file] DESCRIPTION
yum-cron is an alternate interface to yum that is optimised to be convenient to call from cron. It provides methods to keep repository metadata up to date, and to check for, download, and apply updates. Rather than accepting many different command line arguments, the dif- ferent functions of yum-cron can be accessed through config files. config-file is used to optionally specify the path to the configuration file to use. If it is not given, the default configuration file will be used. It is useful to be able to specify different configuration files for different use cases. For example, one configuration file might be set to update the repository metadata, and a line could be added to the crontab to run yum-cron frequently using this file. Then, another configuration file might be set to install updates, and yum-cron could be run from cron using this file just once each day. FILES
/etc/yum/yum-cron.conf /etc/yum/yum-cron-hourly.conf SEE ALSO
yum (8) AUTHORS
See the Authors file included with this program. BUGS
There of course aren't any bugs, but if you find any, you should email the mailing list, yum@lists.baseurl.org, or consult bugzilla. Nick Jacek yum-cron(8)
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