Re: [Bash-announce] source of tar, gzip, gunzip, bzip, bunzip2 and compress ???

[Karl Berry]

    am not quite sure, if this is the right site for this question.

help-gnu-utils@gnu.org or bug-bash@gnu.org would have been better, but
your mistake is understandable.  Cc-ing bug-bash here, since this is
certainly not an announcement.
    
    Where e.g. I can obtain the source code of the commands like following:
    tar, gunzip, compress, and gzip ???

You can download the sources for most GNU packages (including those)
from http://ftp.gnu.org/gnu.

    In the bash-source code, the commands (about 3300 bash commands) are
    not included with their own source code ???

They are not bash commands.  They are their own packages.

Hope this helps,
karl@gnu.org