cpan> o conf  
CPAN::Config options from /usr/lib/perl5/5.8.8/CPAN/Config.pm:
    commit             Commit changes to disk
    defaults           Reload defaults from disk
    init               Interactive setting of all options

    build_cache        10
    build_dir          /opt/build
    cache_metadata     1
    cpan_home          /opt/
    dontload_hash     
    ftp                /usr/bin/ftp
    ftp_proxy          
    getcwd             cwd
    gpg                /usr/bin/gpg
    gzip               /usr/bin/gzip
    histfile           /opt/histfile
    histsize           100
    http_proxy         
    inactivity_timeout 0
    index_expire       1
    inhibit_startup_message 0
    keep_source_where  /opt/sources
    lynx               
    make               /usr/bin/make
    make_arg           
    make_install_arg   
    makepl_arg         
    ncftp              
    ncftpget           
    no_proxy           
    pager              less
    prerequisites_policy ask
    scan_cache         atstart
    shell              /bin/bash
    tar                /bin/tar
    term_is_latin      1
    unzip              /usr/bin/unzip
    urllist           
         
        http://cpan.linuxforum.net/
    wget               /usr/bin/wget