View installed glibc versions

From: http://www.linuxquestions.org/questions/linux-software-2/how-to-check-glibc-version-263103/

Method 1:
Find the DSO (dynamic shared object) of libc and run it, as shown below:
[Whb @ jcwkyl ~] $ Locate libc. so

/Lib/libc. so.6

/Lib/i686/nosegneg/libc. so.6

/Usr/lib/libc. so

[Whb @ jcwkyl ~] $/Lib/libc. so.6

The gnu c Library stable release version 2.5, by Roland McGrath et al.

Copyright (C) 2006 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

Particle PURPOSE.

Compiled by gnu cc version 4.1.2 20070626 (Red Hat 4.1.2-14 ).

Compute on a Linux 2.6.9 system on 2008-05-23.

Available extensions:

The C stubs add-on version 2.1.2.

Crypt add-on version 2.1 by Michael gglad and others

GNU Libidn by Simon Joseph fsson

GNU libio by Per Bothner

NIS (YP)/NIS + NSS modules 0.19 by Thorsten Kuk

Native POSIX Threads Library by Ulrich Drepper et al

BIND-8.2.3-T5B

RT using linux kernel aio

Thread-local storage support supported ded.

For bug reporting instructions, please see:

<Http://www.gnu.org/software/libc/bugs.html>.

Method 2:
Compile and run the following C code:
# Include <stdio. h> <br/> # include <gnu/libc-version.h> <br/> int main (void) {puts (gnu_get_libc_version (); return 0 ;}
[Whb @ jcwkyl c] $ gcc checkglibcversion. c-o checkglibcversion

[Whb @ jcwkyl c] $./checkglibcversion

2.5