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What happens if you run 'ulimit -n 0'? Why?
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Complete the file descriptors exercise.
What, if anything, did you learn? Any other comments?
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Identify a flag that may be passed to open(2) that was not discussed in the videos or slides.
What does it do? Is it OS specific?
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Run the hole.c program on different Unix systems (NetBSD, macOS, Linux, ...).
Does the behavior differ? Why?
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If you create a new file, write, say, 10 bytes of data, and then seek to the end of the file, where do you end up? Why?
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Consider the following two commands,
cmd >file 2>&1 and cmd 2>&1 >file.
Is there a difference?
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