me@/path/to/my/scripts/$ ./runTest.perl
Can't locate Script/Singleton.pm in @INC (you may need to install the Script::Singleton module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.30.0 /usr/local/share/perl/5.30.0 /usr/lib/x86_64-linux-gnu/perl5/5.30 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.30 /usr/share/perl/5.30 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at ./toy02.perl line 6.
BEGIN failed--compilation aborted at ./runTest.perl line 6.
me@/path/to/my/scripts/$