id number of users and groups

[Tonatiuh]

RH AS 2.1

How can I know the id (number) of a user and group?

[Paul Cross_1 · Accepted solution]

The UID (user) and GIDs (group) are the third field (separated by colons) in the /etc/passwd and /etc/group files respectively.
They are world readable in case you don't have advanced privileges.

[Vid Luther]

you can also type `id username`
to get it in a much readable format.

[Ivajlo Yanakiev]

also try that:

grep username /etc/password

[Michael Williams_6]

Minor point, but if you're using a NIS or LDAP authentication server, then the best method is:

getent {passwd or group} {name of user or group you're looking for}

So if I wanted to find the id for user michaelw, it would be:

getent passwd michaelw

And similarly for group users

getent group users