how many types of user accounts are available in linux os?

if i assign a uid below 500 to a normal user..wat wil be
happened?

Answer Posted / susheel narayan singh

There are three type of user accounts-
1- Super user (root) uid and gid =0
2- System user (ftpd,sshd) uid and gid (1-499)
3- Regular user (what u create with useradd cmd) uid and
gid (500<)

Note: If you assign uid below to 500 like between 1 to 100
it means that user umask will be 022 like root.
And you know that normally user whose uid and gid is above
their umask is 002.

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