As root I would like to login as a service user (jenkins - the CI server) and manipulate files with its user,group and umask settings.
Normally I would (as root) do
sudo -i -u jenkins, or even
su - jenkins. However jenkins' default shell is /bin/false, which exits immediately.
Is there a way to login as Jenkins but specify a different shell to use? Do I really have to change jenkins' shell in