I am trying to make a script to first check and empty those file in /var/log/ which are greater than 500MB

karan2119 · 02-11-2021, 06:23 AM

#!/bin/bash
log_dir=`ls -laSh /var/log/`

for entry in $log_dir
do
Max=$(`stat -f %s "$log_dir"`)
if [[ "$Max" -ge 5000000000 ]]
then
echo "file is over $entry"
#echo /dev/null > $log_dir
else
echo "$entry, File is fine "$Max""
fi
done

wpeckham · 02-11-2021, 07:37 AM

I have solved that problem, but there are a dozen tricks and traps to consider. I stopped doign that manually with ascript when logrotate got good over 20 years ago. Use and properly configure logrotate to do the log rotation/removal. Using the right tool is far safer than trying to reinvent the horse.

computersavvy · 02-11-2021, 04:48 PM

I agree with wpeckham. Logrotate can be configured by size, time, or other and it is easy enough to do that a simple configuration can handle what you want. look at the logrotate man page and at the files in /etc/logrotate.d The size option is what you are interested in.