One more thing to add, if you don't have root access you can still install the module by specifying a directory of your choice:

perl Makefile.PL PREFIX=/path-to/your-dir LIB=/path-to/your-dir
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Then when you use the module in your code, make sure Perl knows to look in that directory to find the module:

#!/usr/bin/perl -w

use lib '/path-to/your-dir';
use Sys::AlarmCall;
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-- vek --