support of running remote commands just like ssh -t or sftp -b

[davxiao]

I need to run some commands on remote host right after authenticating. The use case is, first I was authenticated as UserA who is a sudoer on remote host, then I run sudo su - UserB to become UserB, since UserA is a sudoer, running sudo does not require password. Once I became UserB, sshfs can mount /home/UserB successfully.

I wonder if above scenario is possible with sshfs.

The following two existing commands do something similar to what I wanted on sshfs:
ssh -t UserA@remote-host "sudo su - UserB"
or
sftp -b batch-file-which-run-sudo UserA@remote-host

[yanir3]

You can't do that because sftp does not have a sudo command. That example you've given with sftp -b will fail. Why not authenticate as UserB in the first-place?

[Nikratio]

yanir3 is right, this is fundamentally impossible. Sorry!