How to find out what version of glibc is used?

[LazY Puppy]

Hi,

How can I find out what version of glibc of a Puppy is used?

[april]

http://puppylinux.org/wikka/glibc

[Karl Godt]

Usually the version is added ad the end of the file name .

On 32-bit it is usually located inside the /lib folder :

Code: Select all

# ls /lib/libc-*
/lib/libc-2.11.1.so

The needs to cut -f2 -d '-' | rev | cut -f1 -d '.' | rev
Something like this or awk .

Usually executing /lib/libc-*
should tell something like this :

Code: Select all

# /lib/libc-*
GNU C Library (Ubuntu EGLIBC 2.11.1-0ubuntu7) stable release version 2.11.1, by Roland McGrath et al.
Copyright (C) 2009 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.
Compiled by GNU CC version 4.4.3.
Compiled on a Linux >>2.6.24-27-server<< system on 2010-04-22.
Available extensions:
	crypt add-on version 2.1 by Michael Glad and others
	GNU Libidn by Simon Josefsson
	Native POSIX Threads Library by Ulrich Drepper et al
	BIND-8.2.3-T5B
For bug reporting instructions, please see:
<http://www.debian.org/Bugs/>.

But of course if several versions installed needs some filters to get the used one .

The library is mainly linked to by Link /lib/libc.so.6 .

One could check an always available library like /usr/[X11]/lib/libX11.so
using command `ldd` :

Code: Select all

# ldd /usr/lib/libX11.so
	linux-gate.so.1 =>  (0xb7801000)
	libxcb.so.1 => /usr/lib/libxcb.so.1 (0xb76c8000)
	libdl.so.2 => /lib/libdl.so.2 (0xb76c4000)
	libc.so.6 => /lib/libc.so.6 (0xb757a000)

Code: Select all

# WHICH_CLIB=`ldd /usr/lib/libX11.so | grep 'libc\.so' | head -n1 | awk '{print $3}'`
# $WHICH_CLIB

End would be :

Code: Select all

# $WHICH_CLIB | grep -oE 'version [[:digit:]\.]+' | head -n1
version 2.11.1

[LazY Puppy]

WOW !!!

Thanks!

[Mike Walsh]

I usually find that something like

Code: Select all

ldd --version

will tell you what you need to know.


Mike.