localhost$ ssh example.com
example.com$ ls
             /folder1
             /folder2
example.com$ _

$ ssh user@host  -t 'bash -l -c "ls;bash"'

ssh user@host -t 'ls; exec $SHELL -l'

if [ -d "$HOME/bin" ] ; then
    PATH="$HOME/bin:$PATH"
fi

YOUR_DEFAULT_SHELL -c COMMAND

ssh user@host -t 'screen bash -l -c "ls;bash"'

ssh -tt user@host 'bash -l -c "/path/to/command'