or download this
root@us-lamp-prd-l-grt-web:~# perl -MCPAN -e 'install Sys::RunAlone'
CPAN: Storable loaded ok (v2.39)
...
root@us-lamp-prd-l-grt-web:~# perl test.pl
Can't locate Sys/RunALone.pm in @INC (@INC contains: /etc/perl /usr/lo
+cal/lib/perl/5.10.1 /usr/local/share/perl/5.10.1 /usr/lib/perl5 /usr/
+share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/si
+te_perl .) at test.pl line 3.
BEGIN failed--compilation aborted at test.pl line 3.