32 bits or 64 bits?

getconf LONG_BIT
Easy and direct way to find this out.
Sample Output
32

109
By: caiosba
2009-08-08 21:22:19

11 Alternatives + Submit Alt

What Others Think

Does this return the system's capability or merely its current configuration? I ask because on the new box I recently built to learn with, it reported only 32-bit but I assume it's be 64-bit-capable. (I know this also depends on what version of the OS I installed so I'll do a little more digging on that too since I don't remember offhand.)
bithaze · 462 weeks and 6 days ago
I've run this command on many different systems including Linux, SunOS, etc, and it works great. I've yet to find a POSIX based system it doesn't work on. I just saw the alternative, 'arch' command and that seems to work good too, but that will output x86 or x86_64 not an integer with the number of bits. As for looking at /proc/cpuinfo, that will just tell you what your processor is capable of. A lot of times, you'll find a system that is running a 32 bit OS but has a 64 bit processor. So, I would avoid getting details on the processor itself if what you really want to know what your OS is supporting. I suspect that some of the other alternatives might just be checking CPU hardware and not the OS. I'll stick with getconf LONG_BIT, although now that I know the arch command exists, I'll see if it works on all POSIX systems like the getconf LONG_BIT command seems to.
sonic · 156 weeks and 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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