Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
I login first with user1, and then log into user3 with 'su', and then to user2 and so on. I can use 'who' to know who is the first user. And using 'whoami' to know who is the current user. But how can I know the user level? Because sometimes I want to change back to the former user by using 'exit', not again using 'su'.
what do you mean by user levels ? If you are lookig for user logins, here are few points...
You understand right. What "user level" I mean is the user logins. From your writing I understood that using 'su' one can't see the user logins but using 'ssh', right?
You understand right. What "user level" I mean is the user logins. From your writing I understood that using 'su' one can't see the user logins but using 'ssh', right?
SU'ing to a user, you are still the person who logged in. There is a UID and an EUID. Using su, your EUID (effective user ID changes). If the real person you su'ed to is logged in, w and who will show that login as well as others.
Using su is logged in /var/log/messages. Using sudo is better because every command is logged.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.