尝试
ssh -t -t（或
ssh -tt简称）强制伪tty分配，即使stdin不是终端。
从ssh联机帮助页：
-T Disable pseudo-tty allocation.-t Force pseudo-tty allocation. This can be used to execute arbitrary screen-based programs on a remote machine, which can be very useful, e.g. when implementing menu services. Multiple -t options force tty allocation, even if ssh has no local tty.
