Improved code

src/modules/debug/ee_mod_debug_mysql.sh

@@ -22,10 +22,8 @@ function ee_mod_debug_mysql()
 			# Set a cron for slow query log
 			if [ ! -z $EE_DEBUG_IMPORT_SLOW_LOG ]; then
 				ee_cron_time=${EE_DEBUG_IMPORT_SLOW_LOG##*=}
-				if [ "$ee_cron_time" = "" ] || [ ! $ee_cron_time =~ "^[0-9]+$" ]; then
-					ee_cron_time=5
-				fi
-				crontab -l | sed '*/$ee_cron_time * * * * /usr/local/sbin/ee import-slow-log' | crontab -
+				[[ $ee_cron_time =~ ^-?[0-9]+$ ]] || ee_cron_time=5
+				crontab -l | { cat; echo "*/$ee_cron_time * * * * /usr/local/sbin/ee import-slow-log"; } | crontab -
 			fi
 
 		else