How can I get a list of linux users/group?

Question

I need to get and filter the linux users list like:

username1 username1_group
username2 username2_group
...
usernameN usernameN_group

I've tried, but only that I've found is:

cat /etc/passwd | grep /home | cut -d: -f1

It gives me the list of users in /home folder. But how can I add the group name to each of them?

Thanks in advance!

Answer 1

Try this:

getent passwd | awk -F: '{print $1}' | while read name; do groups $name; done

Answer 2

getent passwd

... and cut what you need.

Also, getent has the advantage that it will look at all databases on the system. /etc/passwd only contains information for local users but not other places like LDAP, NIS, etc.

Answer 3

have a look at /etc/group

Answer 4

The list of groups is /etc/group.

To get a list of the groups that a specific user is in, you can run

$ groups username

Answer 5

Thank you, guys, it's exactly what I've searching for:

getent passwd | grep /home | awk -F: '{print $1}' | while read name; do groups $name; done