How to Check the glibc (GNU libc) Version on Fedora 20 and Fedora 21

Using ldd

ldd --version


This should return a result similar to (though your version may vary):

ldd (GNU libc) 2.20
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.


In this case, version 2.20 is installed.


Using yum

yum list glibc


This should return a result similar to:

Installed Packages
glibc.x86_64           2.20-5.fc21           @anaconda
Available Packages
glibc.i686             2.20-5.fc21           fedora


In this case, 2.20-5.fc21 is the package installed.

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