How to become a Jenkins user?

Question

I have installed Jenkins and during installation an user named jenkins has been created. I can see from the documentation:

The 'jenkins' user is created to run this service.

Now I need to become this jenkins user. I have in the following ways:

[root@hostname ~]# sudo su - jenkins
[root@hostname ~]# id
uid=0(root) gid=0(root) groups=0(root)

[root@hostname tmp]# su - jenkins
[root@hostname tmp]# whoami
root

Why switch user to the jenkins user is not working?

I am on RHEL.

cat /etc/*release
Red Hat Enterprise Linux Server release 6.3 (Santiago)

Answer 1

It's more like a queastion for superuser but:

You don't need sudo when switching the user. su will ask for the users password anyway:

su - jenkins

You can also use sudo to execute a single command as another user with the -u option. If that command is a shell, you'll get a shell. E.g.:

sudo -u jenkins /bin/bash