How to Check the glibc (GNU libc) Version on Fedora 22

Posted on July 7, 2015 by J. Mays | Updated: April 19, 2023

Category: Technical Support | Tags: Command-line, DNF, Fedora, Fedora 22, Glibc, ldd, Security, version

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Pre-Flight Check

These instructions are intended specifically for checking the installed version of glibc.
I’ll be working from a Liquid Web Self Managed Fedora 22 server, and I’ll be logged in as root.

Using ldd

ldd --version

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

ldd (GNU libc) 2.21 Copyright (C) 2015 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 2.21 is installed.

Using dnf

dnf list glibc

This should return a result similar to:

Installed Packages glibc.x86_64 2.21-5.fc22 @System Available Packages glibc.i686 2.21-5.fc22 fedora

In this case, 2.21-5.fc22 is the package installed.

About the Author: J. Mays

As a previous contributor, JMays shares his insight with our Knowledge Base center. In our Knowledge Base, you'll be able to find how-to articles on Ubuntu, CentOS, Fedora and much more!