Yes, I understand. Once you modify the path from /logs/custom log to different location, try reloading the http://<HOST>:<PORT>/system/console/slinglog page. Page becomes inaccessible. Page will be accessible only when you revert back the changes.
By Default, AEM will backup everything under the crx-quickstart directory. You can achieve this by moving the log file location outside of crx-quickstart directory. Change the log location by going to slinglog under the "appender" section as shown below: