switch user using sudo failing

[ferguskeatinge]

Not sure if bug or i'm doing something wrong, switching to another user using sudo fails?

ssh_exec_wait(session, c('echo "mypassword!" | sudo -S su - user2'))

then when running the whoami still returns user1.

Any input welcome, thanks.

[willschulz]

I'm having the same problem, any advice on this would be greatly appreciated!