determine if CPU is 32-bit or 64-bit

grep lm /proc/cpuinfo
If the 'lm' flag is present, then the CPU is 64-bit. If no output, then CPU is 32-bit.
Sample Output
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm nx lm

By: bobbydale
2009-02-19 22:48:47

What Others Think

uname -m works just fine :)
nottings · 525 weeks and 4 days ago
uname only works to show the architecture of the installed operating system. If you have a 32-bit OS installed on a 64-bit platform, you can use this command to see if your CPU support 64-bit.
bobbydale · 525 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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