FML.sh

#!/usr/bin/env bash

ssh -t user@server.com 'df -h'

^^^^^^ does not work ^^^^^^^
ssh: command not found
------------------------------------------

#!/usr/bin/env bash

/usr/bin/ssh -t user@server.com 'df -h'

^^^^works fine^^^^^^

WHY THE FUCK DO I NEED TO SPECIFY A PATH FOR SSH?
"/usr/bin" is in my $PATH for `bash`

Try an 'echo $PATH' in your script to verify that.