Linux Hints

Linux Hints

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Processor Architecture

Does my CPU support 64 bit?

Check the processor flags in /proc/cpuinfo for the "lm" (Long Mode) flag. This indicates if you have an x86_64 architecture CPU.

Am I running a 32 or 64 bit kernel?

In your scripts, use the following snippet to determine if you are running on a 32-bit or 64-bit kernel:

 KERNELBITS=`getconf LONG_BIT`

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