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lab 2.1 echo: write error: No such process

Hi there,

When trying to do the lab 2.1, I'm stuck at the part when we are supposed to enter:

[email protected]:/sys/fs/cgroup/freezer/mycgroup$ sudo bash -c 'echo 20913 >>tasks'

I get the following error:

echo: write error: No such process

I have tried several times, by opening and closing a new terminal window or a new terminal tab, then entering the corresponding PID number, and I always get the same error. I had no problem following along up until here.



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