useradd : apply group membership changes

[nmset]

Hello,

I don't know if it's the right place for the following problem as it's not about building up a script.

PROBLEM : adding a user to a secondary group is not reflected system wide immediately.
It is only taken into account after rebooting the machine. (working in runlevel 5).

user1 has primary group user1, home dir /home/user1 with permissions 0770.
user2 has primary group user2, home dir /home/user2 with permissions 0700.

Add user2 to group user1 :
usermod -G user1 user2


user2 shell:
ls -l /home/user1 : fails

touch /home/user1/test : fails.

Both these commands are OK after a full reboot.

How can we apply the group membership changes system-wide without rebooting ?

Thank you.

[secondmouse]

I don't think you need to do a full reboot for the new permissions to be effect. All you have to do is to log out as user2 and log back in again.

[nmset]

Yep, that's what I missed. After a new login, it works as expected.

Thank you.