How can I tell if I am using the hard-float or the soft-float version of Debian/Raspbian?

Question

Let's assume that I am dropped into a room with a Raspberry Pi running either Debian or Raspbian. How do I find out if it has hard float support or if it is just using soft float?

Answer 1

Check for the existence of the directory:

/lib/arm-linux-gnueabihf

the soft-float version do not have this directory, they have:

/lib/arm-linux-gnueabi

instead, or you can list the packages installed using:

dpkg -l

and see the platform in the third column (all/armhf/armel)