ykaganovichykaganovich 15k88 gold badges6262 silver badges9898 bronze badges Increase a comment
Michael StumMichael Stum 181k119119 gold badges408408 silver badges541541 bronze badges two and or is not short-circuiting?
RynantRynant 24.4k55 gold badges6060 silver badges7171 bronze badges 2 Parenthesis did not deal with the issue, only improved what arrived out, I am getting xlsx data files when all I am trying to look for is xls and xlk data files.
Even if you omitted Get started-Procedure (which can be how it is best to invoke command-line utilities - directly), the method would tumble limited, as the end result on the conditional then is dependent upon whether or not the utility made any stdout output, which has no confirmed romantic relationship with regardless of whether it succeeded or not.
$a=somecommand # Momentary variable to keep exit status of the last command (due to the fact we won't produce to "$?")
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The three equal signs mean "equality without the need of kind coercion". Using the triple equals, the values should be equal in sort at the same time.
operators however, Except if you have a style wherever Every single situation is really a operate that Needs to be executed. Sounds like a style and design odor, but from time to time (hardly ever) it is a clear strategy to do things.
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According to this, We can easily express that overall performance of bitwise & operator is fairly small compare into the shorter-circuit && operator.
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Checking $LASTEXITCODE is barely needed if you would like know the particular exit code set by an external utility - abstract achievements or failure is reflected in $?, just as with indigenous cmdlets.