Off topic:why did I failed to install perl module

Question

[liuhui]

Dear all,

I want to install a perl module on my ubuntu 12.04, but I failed to install it. Could anyone please tell to why and how to solve this problem?

More this please see the following lines. Thank you very much.

root@pine:/home/liuhui# perl -MCPAN -e shell
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.960001)
Enter 'h' for help.

cpan[1]> install Dist::CheckConflicts
Going to read '/root/.cpan/Metadata'
  Database was generated on Wed, 01 Apr 2015 11:53:22 GMT
Running install for module 'Dist::CheckConflicts'
Running make for D/DO/DOY/Dist-CheckConflicts-0.11.tar.gz
Checksum for /root/.cpan/sources/authors/id/D/DO/DOY/Dist-CheckConflicts-0.11.tar.gz ok
Scanning cache /root/.cpan/build for sizes
...........................................................................-DONE
DEL(1/2): /root/.cpan/build/Tk-804.033-UJJOfa
DEL(2/2): /root/.cpan/build/Tk-804.033-UJJOfa.yml

  CPAN.pm: Going to build D/DO/DOY/Dist-CheckConflicts-0.11.tar.gz

Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Dist::CheckConflicts
Writing MYMETA.yml and MYMETA.json
cp lib/Dist/CheckConflicts.pm blib/lib/Dist/CheckConflicts.pm
Manifying 1 pod document
  DOY/Dist-CheckConflicts-0.11.tar.gz
  /usr/bin/make -- OK
Running make test
PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/00-compile.t .. ok
t/also.t ........ ok
t/basic.t ....... ok
t/conflicts.t ... ok
t/dist.t ........ ok
t/merge.t ....... ok
t/runtime.t ..... ok
t/warn.t ........ ok
All tests successful.
Files=8, Tests=40,  0 wallclock secs ( 0.05 usr  0.01 sys +  0.30 cusr  0.04 csys =  0.40 CPU)
Result: PASS
  DOY/Dist-CheckConflicts-0.11.tar.gz
  /usr/bin/make test -- OK
Running make install
Manifying 1 pod document
Appending installation info to /root/perl5/lib/perl5/x86_64-linux-gnu-thread-multi/perllocal.pod
  DOY/Dist-CheckConflicts-0.11.tar.gz
 ** /usr/bin/make install  -- OK**

cpan[2]> q
Terminal does not support GetHistory.
Lockfile removed.
root@pine:/home/liuhui# perl -e 'use Dist::CheckConflicts'
Can't locate Dist/CheckConflicts.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.14.2 /usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl .) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.