When running local script on remote server via multiple ssh, script is split into multiple lines?

Question

I have a script on my local machine, script.sh. I want to run it on a remote server that is only accessible by multiple ssh.

script.sh:

ls ls ls 

I tried:

user@localhost:~/$ ssh -At host1 ssh -At host2 "bash -s" -- < ./script.sh 

but the output was split onto multiple lines:

user@host2:~/$ ls examples.desktop user@host2:~/$ ls examples.desktop user@host2:~/$ ls 

I also would like this to execute without putting me in a terminal on the remote machine.

How can I get the script to execute as a single command?

Answer 1

I was able to fix this by removing the -t flag, so that ssh didn't put me in a terminal on the remote host.

user@localhost:~/$ ssh -A host1 ssh -A host2 "bash -s" -- < ./script.sh 

Output:

examples.desktop examples.desktop examples.desktop user@localhost:~/$ 

It also kept me on the local host rather than landing me in a terminal on the remote host.