Raspberry Pi（python）在后台运行并重新打开打印输出

Question

I have learned online that there are several ways of running a python program in the background:

1. sudo python scriptfile.py&
2. sudo python scriptfile.py , then Control + Z , then bg
3. Using nohup
4. Using screen

However, I would like to know if when doing any of the first two options, after I close and reopen SSH again, I can recover what the python program is internally printing by the print commands. So I run python and I start to see my print commands output, but if I close the SSH, even though the program is still running, I need to restart it in order to again see my print statements.

Answer 1

1) You should never run a script with sudo . You could potentially destroy your system.

2) Once your SSH session is closed all processes go with it. That is unless you use nohup or screen as you have found.