SSH task sometimes hangs when using sudo su - user

Summary

When creating a SSH key to a remote machine it sometimes hangs when using a certain combination of commands on the remote host.

Steps to Reproduce

1. Create a SSH task
2. On the commands define something like that:

   sudo su - user
   ls /tools/eai/stage
   tname=`ls /tools/eai/stage/deployagent*-bin.tar.gz`
   echo $tname
   cd /tools/eai/scripts/deployagent
   rm -vrf * > /dev/null/ 2>&1
   tar xvf $tname > /dev/null 2>&1
   rm $tname > /dev/null 2>&1
   

3. Run the build

Expected Results

Task runs, commands run and finish and the build either succeeds or fails.

Actual Results

The build hangs and spins indefinitely.

Workaround

Wrap the commands above inside a script and run it like:

nohup ./yourscript.sh </dev/null>/dev/null 2>&1 &