I may be missing something here... but with both sudo and su you're going to have to deal with prompts unless the initial script is run as a superuser. How about: 
#!/usr/bin/perl
$|++;
print "enter someuser password at the prompt below:$/";
$i=`su someuser -c "whoami"`;
print $i;

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In reply to Re: Changing user in perl script by jcc
in thread Changing user in perl script by tsk1979

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