Re: How can I findout if I have glibc2.1, 2.2, or 2.3?

AFAICT:

Look in /lib, and I think the library itself has the version number in the
name.

I think there will be a bunch of files called libc.so.[partial version
number], all linked to the file which has the actual version number for the end of
the name.

The filename may not be that, I haven't cared what version I had since the
libc5-libc6 transition (the WordPerfect binaries required some libc5 libraries
or something, so they kept bombing)