cpan
cpan> install Archive::Tar

##</code><code>##

Running make install
Warning: You do not have permissions to install into /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi at /usr/lib/perl5/5.8.8/ExtUtils/Install.pm line 114.
mkdir /usr/lib/perl5/site_perl/5.8.8/Archive: Permission denied at /usr/lib/perl5/5.8.8/ExtUtils/Install.pm line 176
make: *** [pure_site_install] Error 13
  /usr/bin/make install  -- NOT OK
    You may have to su to root to install the package

##</code><code>##

cpan> o conf
CPAN::Config options and /home/iesadm/.cpan/CPAN/MyConfig.pm:
    commit             Commit changes to disk
    defaults           Reload defaults from disk
    init               Interactive setting of all options

    build_cache        30
    build_dir          /install/others/.cpan/build
    cache_metadata     1
    cpan_home          /install/others/.cpan
    dontload_hash
    ftp                /usr/bin/ftp
    ftp_proxy
    getcwd             cwd
    gpg                /usr/bin/gpg
    gzip               /bin/gzip
    histfile           /install/others/.cpan/histfile
    histsize           600
    http_proxy
    inactivity_timeout 0
    index_expire       1
    inhibit_startup_message 0
    keep_source_where  /install/others/.cpan/sources
    links
    make               /usr/bin/make
    make_arg
    make_install_arg
    makepl_arg
    ncftp
    ncftpget
    no_proxy
    pager              /usr/bin/less
    prerequisites_policy ask
    scan_cache         atstart
    shell              /bin/ksh
    tar                /bin/tar
    term_is_latin      1
    unzip              /usr/bin/unzip
    urllist
        http://cpan.perl.org/
        http://ppm.activestate.com/CPAN/
    wget               /usr/bin/wget


##</code><code>##

$ uname -a
Linux weblt0001 2.6.18-238.12.1.el5 #1 SMP Sat May 7 20:18:50 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux