Hehe thanks a lot for the indication.... luckily I tried but it went wrong
I've done what you said and I don't understand completely the output but it looks like it is already installed???
asterix:/usr/src# dpkg --status libc6
Status: install ok installed
Maintainer: GNU Libc Maintainers <firstname.lastname@example.org>
Replaces: ldso (<= 1.9.11-9), timezone, timezones, gconv-modules, libtricks, libc6-bin, netkit-rpc, netbase (<< 4.0), libc6-dev (<< 2.3.2.ds1-14)
Suggests: locales, glibc-doc
Conflicts: strace (<< 4.0-0), libnss-db (<= 2.2-6.1.1), timezone, timezones, gconv-modules, libtricks, libc6-doc, libc5 (<< 5.4.33-7), libpthread0 (<< 0.7-10), libc6-bin, libwcsmbs, apt (<< 0.3.0), libglib1.2 (<< 1.2.1-2), netkit-rpc, wine (<< 0.0.20031118-1), cyrus-imapd (<< 1.5.19-15)
Description: GNU C Library: Shared libraries and Timezone data
Contains the standard libraries that are used by nearly all programs on
the system. This package includes shared versions of the standard C library
and the standard math library, as well as many others.
Timezone data is also included.
asterix:/usr/src# apt-cache search libc6
altgcc - Alternate gcc package for the libc5 environment.
ldso - The Linux dynamic linker and library for libc4 and libc5.
libc5 - The Linux C library version 5 (run-time libraries).
libc5-altdbg - The Linux C library version 5 (alternative debug files).
libc5-altdev - The Linux C library version 5 (alternative dev files).
libcompfaceg1 - Compress/decompress images for mailheaders, libc6 runtime
libcompfaceg1-dev - Compress/decompress images for mailheaders, libc6 devel
libdl1-altdev - The Linux dynamic linker library (libc5 altdev files).
libg++27-altdev - The GNU C++ libraries (libc5 version)
termcap-compat - Compatibility package for old termcap-based programs.
apt - Advanced front-end for dpkg
apt-utils - APT utility programs
debian-policy - Debian Policy Manual and related documents
libc6 - GNU C Library: Shared libraries and Timezone data
libc6-dbg - GNU C Library: Libraries with debugging symbols
libc6-dev - GNU C Library: Development Libraries and Header Files
libc6-i686 - GNU C Library: Shared libraries [i686 optimized]
libc6-pic - GNU C Library: PIC archive library
libc6-prof - GNU C Library: Profiling Libraries
libregex0 - GNU regular expression library, run time libraries. [libc5]
libtext-iconv-perl - Convert between character sets in Perl
manpages-ja-dev - Japanese version of the manual pages (for developers)
manpages-pt-dev - Portuguese Versions of the Manual Pages
xviewg - XView shared libraries [libc6]
xviewg-dev - XView development tools [libc6]