bash - Does the the order of command line flags matter? -


this question has answer here:

i testing hugo static blog generator comes themes , example sites within them.

in order use examplesite, copy content it's content hugo project root. while did this, noticed where, put -flag args seems important.

is normal bash behavior or introduced zsh?

this command didn't work 

cp themes/hugo-theme-bootstrap4-blog/examplesite/* . -r

this command worked!

cp -r themes/hugo-theme-bootstrap4-blog/examplesite/* .

cp own command, provided os vendor. neither bash nor zsh controls behavior of cp.

the posix standard requires cp accept options before arguments. given in posix utility syntax guidelines, entry #9:

  1. all options should precede operands on command line.

gnu tools go beyond requirement, accepting options after arguments unless -- given prior (as described in guideline #10).


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