Are there any summary report to record the permissions authorized to whom?

May I know any convenient way to get the summary of what the permissions the users are granted?  Thanks.

Do you mean  that you want to know a summary about Linux user :
if yes , https://www.tecmint.com/usermod-command-examples/

Or you want to know others, please explain detail

shhanshan：Do you mean  that you want to know a summary about Linux user :
if yes , https://www.tecmint.com/usermod-command-example...回到原帖

Hello shhanshan,  thanks for your reply.  I mean the RAM policy here