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Take note: This question initially questioned in 2009, when powershell did not have aid to the && operator.
Michael StumMichael Stum 181k119119 gold badges408408 silver badges541541 bronze badges two and or is just not limited-circuiting?
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b=0111. When you are managing a logic system that treats any non-zero as legitimate, then the bitwise or will act in a similar way because the rational or, but it really's counterpart (bitwise and, "&") will likely not. Also the bitwise or isn't going to accomplish limited circuit evaluation.
$a=somecommand # Temporary variable to retail outlet exit status of the final command (considering that we can't publish to "$?")
By their mathematical definition, OR and And they are binary operators; they confirm the LHS and RHS circumstances Irrespective, in the same way to
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So to reply the last two thoughts, I wouldn't say you can find any caveats In addition to "know the difference between The 2 operators." They are not interchangeable because they do two absolutely various things.
CyberironCyberiron 911 bronze badge two There's no need Latest articles and blogs for check out / catch, mainly because it is only needed for terminating errors, which external utilities such as hostname, ipconfig and findstr cannot induce.
Lydell AndersonLydell Anderson 1711 bronze badge 1 2 Start off-Procedure is the incorrect Software to work with for invoking command-line utilities on the whole. Especially, as made use of below, Begin-Approach runs filename1.exe asynchronously in a different console window and returns practically nothing, which within a Boolean context evaluates to $Phony.
So, to stay away from glitches about "lacking a switch" or "invalid swap" when passing file paths as arguments to commands like these:
Examining $LASTEXITCODE is just needed if you need to know the precise exit code established by an exterior utility - summary achievement or failure is mirrored in $?, equally as with native cmdlets.