#adjusting the @INC shift(@INC); unshift(@INC,'/usr/share/perl/5.10.1/etc/perl'); #Call to your script qx(do-release-upgrade); #### @INC = ('/usr/share/perl/5.14.2','/etc/perl /usr/local/lib/perl/5.14.1','/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','/opt');