check if your processor is 32 or 64 bit

uname -m
i686 = 32 bits x86_64 = 64 bits the command "getconf LONG_BIT" will work just as well.
Sample Output
i686

-4
2011-01-15 21:07:13

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What Others Think

To check the processor for 64/32bit use: grep flags /proc/cpuinfo | grep lm
Habitual · 387 weeks and 5 days ago
'arch' command is the shortest way to get this info
zolden · 387 weeks and 4 days ago
x86_64 systems can run both 32-bit and 64-bit software. `uname` and `arch` show you the compiled arch of specifically the kernel software, but not the capabilites of the actual hardware.
mhs · 387 weeks and 4 days ago
Too right mhs
DaveQB · 387 weeks and 2 days ago

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