You can always use require to include another script, but in Perl, it's best to use a module for global functions:

# Common.pm
package Common;

use strict;

sub foo {
    # do stuff
}

sub bar {
    # do other stuff
}
1; # have to return a non-zero value at end!
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The to use it:

# client.pl
use  strict;

use lib('/path/to/modules/');
use Common;

Common::foo();
Common::bar();
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Jeff

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