find /home/*/public_html -type f -iname error_log -size +1M -delete
or
find /home/*/public_html -type f -iname error_log -size +1M -exec rm -rf {} \;Cronjob to delete all error_log +1M at 02:00
0 2 * * * find /home/*/public_html -type f -iname error_log -size +1M -exec rm -rf {} \; > /dev/null 2>&1Find all error_log +50M with size
find /home/*/public_html/ -type f -iname error_log -size +50M -exec du -sh {} \;