will that affect usage of perl if modules not installed to local/bin?

[Liangliang Gao]

llgao@llgao-Studio-1458:~/spada_soft/BioPerl-1.6.1$ cpanm Graph
!
! Can't write to /usr/local/share/perl/5.12.4 and /usr/local/bin: Installing modules to /home/llgao/perl5
! To turn off this warning, you have to do one of the following:
!   - run me as a root or with --sudo option (to install to /usr/local/share/perl/5.12.4 and /usr/local/bin)
!   - Configure local::lib your existing local::lib in this shell to set PERL_MM_OPT etc.
!   - Install local::lib by running the following commands
!
!         cpanm --local-lib=~/perl5 local::lib && eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
!
Graph is up to date. (0.94)
llgao@llgao-Studio-1458:~/spada_soft/BioPerl-1.6.1$ cpanm Log::Log4perl
!
! Can't write to /usr/local/share/perl/5.12.4 and /usr/local/bin: Installing modules to /home/llgao/perl5
! To turn off this warning, you have to do one of the following:
!   - run me as a root or with --sudo option (to install to /usr/local/share/perl/5.12.4 and /usr/local/bin)
!   - Configure local::lib your existing local::lib in this shell to set PERL_MM_OPT etc.
!   - Install local::lib by running the following commands
!
!         cpanm --local-lib=~/perl5 local::lib && eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
!
--> Working on Log::Log4perl
Fetching http://www.cpan.org/authors/id/M/MS/MSCHILLI/Log-Log4perl-1.37.tar.gz ... OK
Configuring Log-Log4perl-1.37 ... OK
Building and testing Log-Log4perl-1.37 ...