Monday, 17 November 2014

How to check if OSX is 32 or 64-bit?

In order to determine whether bitness of the operating system, we can query it for the value of the POSIX constant LONG_BIT which tells the number of bits in a long int:
$ getconf LONG_BIT
64
Bitness of the kernel can be fetched from the machine hardware name. x86_64 in the output means that machine has the 64-bit CPU:
$ uname -m
x86_64
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