I would like to completely automate the running of CPAN for installation of additional Perl packages on Linux only for now. The CPAN commands I am using right now manually, just so as to answer any prompts that arise, are as follows (by "upgrade" in the subject line, I mean the "install Bundle::CPAN" and "reload cpan" commands at the start here):

  install Bundle::CPAN
  reload cpan
  install Bundle::LWP
  install HTML::TreeBuilder
  install MLDBM
  install Bundle::DBI
[download]

However, certain packages seem to throw up prompts, which negates my purpose of completely unattended installs. Here are some snippets that I've collected from a recent installation of stable Perl version 5.10.1:

,----
| PERL_DL_NONLAZY=1 /wv/precui2/scratch/brentg/Win64/brentg_win64_linu
+x/imports/perl/5.10.1/src/install/Linux-64bit-unknown/perl-5.10.1/bin
+/perl "-Iblib/lib" "-Iblib/arch" test.pl
| Use of uninitialized value $ENV{"PERL_RL_TEST_PROMPT_MINLEN"} in bit
+wise or (|) at test.pl line 33.
|  at test.pl line 33
| Features present: preput 1 getHistory 1 addHistory 1 attribs 1 ornam
+ents 1 appname 1 minline 1 autohistory 1 newTTY 1 tkRunning 1 setHist
+ory 1
| 
|   Flipping rl_default_selected each line.
| 
|     Hint: Entering the word
|         exit
|     would exit the test. ;-)  (If feature 'preput' is present,
|     this word should be already entered.)
| 
| Enter arithmetic or Perl expression: exit
`----

,----
|   CPAN.pm: Going to build D/DA/DAGOLDEN/Sub-Uplevel-0.22.tar.gz
| 
| Creating new 'MYMETA.yml' with configuration results
| Creating new 'Build' script for 'Sub-Uplevel' version '0.22'
| Building Sub-Uplevel
|   DAGOLDEN/Sub-Uplevel-0.22.tar.gz
|   ./Build -- OK
| Running Build test
| t/01_die_check.t ............. ok
| t/02_uplevel.t ............... ok
| t/03_nested_uplevels.t ....... ok
| t/04_honor_later_override.t .. ok
| t/05_honor_prior_override.t .. ok
| t/06_db_args.t ............... ok
| t/07_uplevel_too_high.t ...... ok
| t/08_exporter.t .............. ok
| All tests successful.
| Files=8, Tests=154,  0 wallclock secs ( 0.09 usr  0.04 sys +  0.38 c
+usr  0.09 csys =  0.60 CPU)
| Result: PASS
|   DAGOLDEN/Sub-Uplevel-0.22.tar.gz
|   ./Build test -- OK
| Running Build install
| D/DA/DAGOLDEN/Sub-Uplevel-0.22.tar.gz is just needed temporarily dur
+ing building or testing. Do you want to install it permanently? [yes]
+ 
`----

,----
|   CPAN.pm: Going to build A/AD/ADIE/Test-Exception-0.31.tar.gz
| 
| Building Test-Exception
|   ADIE/Test-Exception-0.31.tar.gz
|   ./Build -- OK
| Running Build test
| t/Exception.t ... ok
| t/caller.t ...... ok
| t/edge-cases.t .. skipped: stuff relating to RT#24678 that I have no
+t fixed yet
| t/import.t ...... ok
| t/isa.t ......... ok
| t/lives_and.t ... ok
| t/preserve.t .... ok
| t/return.t ...... ok
| t/rt.t .......... ok
| t/stacktrace.t .. ok
| t/throws_ok.t ... ok
| All tests successful.
| 
| Test Summary Report
| -------------------
| t/Exception.t (Wstat: 0 Tests: 20 Failed: 0)
|   TODO passed:   20
| Files=11, Tests=53,  1 wallclock secs ( 0.09 usr  0.05 sys +  0.55 c
+usr  0.14 csys =  0.83 CPU)
| Result: PASS
|   ADIE/Test-Exception-0.31.tar.gz
|   ./Build test -- OK
| Running Build install
| A/AD/ADIE/Test-Exception-0.31.tar.gz is just needed temporarily duri
+ng building or testing. Do you want to install it permanently? [yes] 
`----
[download]

I already have some configuration set up to allow for automatic downloading and installing of all inter-package dependencies, but that does not seem to be sufficient to quell those pesky prompts.

Does anyone have a foolproof way to permanently answer all of those prompts with reasonable defaults?

Thanks!

bg