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Please tell me what is yum -q about? and what's its utilize? I now the other option of yum but I don't understand yum -q!

Thank you

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    Have you checked out man yum?
    – ddnomad
    Apr 29, 2017 at 17:12

2 Answers 2

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From the man yum output (man is what is what you should probably check out in the first place for any command before asking it there):

-q, --quiet Run without output. Note that you likely also want to use -y.

So in essence this option prevents yum from outputting anything to standard file descriptors (STDOUT, STDERR). In practice that means you won't see any output in console.

man also references -y option:

-y, --assumeyes Assume yes; assume that the answer to any question which would be asked is yes. Configuration Option: assumeyes

So -y option automatically answers yes to any console prompt that yum makes.

Together yum -qy would allow you to run yum without any output and manual confirmation which makes it quite handy for automation scripts.

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It's used to run yum without output. It's typically used with -y

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