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instaling CPAN

This is all well documented elsewhere.  For complete (and correct notes, see References below.)

Installing CPAN:

Run CPAN shell:
perl -MCPAN -e shell

This will start up the auto-setup app within cpan. The questions are very simple, and are outputted below for basic reference. Note that in the section where it asks: "Where is your X program?" you might need to make sure that you have all of those apps installed. If you have wget and links, you can use that instead of ftp, and that's why I left those blank.

Are you ready for manual configuration? [yes] yes
CPAN build and cache directory? [/root/.cpan]
Cache size for build directory (in MB)? [10]
Perform cache scanning (atstart or never)? [atstart]
Cache metadata (yes/no)? [yes]
Your terminal expects ISO-8859-1 (yes/no)? [yes]
File to save your history? [/root/.cpan/histfile]
Number of lines to save? [100]
Policy on building prerequisites (follow, ask or ignore)? [ask]
Where is your gzip program? [/bin/gzip]
Where is your tar program? [/bin/tar]
Where is your unzip program? [/usr/bin/unzip]
Where is your make program? [/usr/bin/make]
Where is your links program? [/usr/bin/links]
Where is your wget program? [/usr/bin/wget]
Warning: ncftpget not found in PATH
Where is your ncftpget program? []
Warning: ncftp not found in PATH
Where is your ncftp program? []
Where is your ftp program? [/usr/kerberos/bin/ftp]
Where is your gpg program? [/usr/bin/gpg]
What is your favorite pager program? [/usr/bin/less]
What is your favorite shell? [/bin/bash]
PREFIX=~/perl non-root users (please see manual for more hints)
Your choice: []
-j3 dual processor system
Your choice: []
UNINST=1 to always uninstall potentially conflicting files
Your choice: []
Timeout for inactivity during Makefile.PL? [0]
Your ftp_proxy?
Your http_proxy?
Your no_proxy?
Select your continent (or several nearby continents) [] 6
Select your country (or several nearby countries) [] 4
put them on one line, separated by blanks, e.g. '1 4 5' [] 1 10

Enter another URL or RETURN to quit: []
New set of picks:

commit: wrote /usr/lib/perl5/5.8.8/CPAN/Config.pm
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.7602)
ReadLine support available (try 'install Bundle::CPAN')


Installing Modules within CPAN:

To get back into the CPAN console, simply reenter the same command that you used to originally install the app: 
perl -MCPAN -e shell

then to install a module,

cpan> install use Getopt::Long;
CPAN: Storable loaded ok
CPAN: LWP::UserAgent loaded ok
Fetching with LWP:
Going to read /root/.cpan/sources/authors/01mailrc.txt.gz


Running make install
Installing /usr/lib/perl5/5.8.8/newgetopt.pl
Installing /usr/lib/perl5/5.8.8/Getopt/Long.pm
Installing /usr/share/man/man3/Getopt::Long.3pm
Writing /usr/lib/perl5/5.8.8/i386-linux-thread-multi/auto/Getopt/Long/.packlist
Appending installation info to /usr/lib/perl5/5.8.8/i386-linux-thread-multi/perllocal.pod
  /usr/bin/make install  -- OK


If this fails, first guess is that your system clock is out of whack.  Try "ntpdate 0.pool.ntp.org" to re-sync it.