CODEWITHSUNDEEP
pythonlinuxunixnohup
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Reputation: 8386

Redirect nohup to stdout on a script

I have a .sh script that via nohup runs a lot of Python scripts.

I use nohup to run them in the background and avoid neccesary enter pressing when the "nohup: ignoring input and appending output to 'nohup.out'" message appears.

nohup python script2.py 2> /dev/null &
nohup python script2.py 2> /dev/null &
[...]

When I run this .sh, I get the two Python scripts running in the background, ok.

This Python scripts generate a log file, which I deriver to std.stdout:

stream_config = logging.StreamHandler(sys.stdout)  <-- here
stream_config.setFormatter(formatter)
importer_logger.addHandler(stream_config)

Due to my implementation, I want to launch those nohup but sending the stdout to to PID 1

I can do this easily without using nohup as follows:

python tester.py > /proc/1/fd/1

But how can I combine that "don't press enter to continue" and "deriver the file to stdout"?

I tried these with no luck:

nohup python tester.py > /proc/1/fd/1 2> /dev/null &
nohup python tester.py 2> /proc/1/fd/1 &

Thanks in advance.

Upvotes: 0

Views: 1813

Answers (1)

Dan D.
Dan D.

Reputation: 74645

You can fix your command by using the shell to indirectly start your program so that you can redirect its output rather than the output of nohup:

nohup bash -c "exec python tester.py > /proc/1/fd/1" 2> /dev/null &

This isn't the best option but it at least corrects the issue that made your attempts fail.

Upvotes: 2

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