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<p>actually hits those areas of unfilled memory. This may mean parts of a program's code are not actually copied into memory until they are actually used, and unused code may never be loaded into memory at all.</p>

<p><big>Responsibilities</big></p>
<p>In <a href="page.php?w=Unix">Unix</a> and <a href="page.php?w=Unix-like">Unix-like</a> systems, the loader is the <a href="page.php?w=callback_%28computer_science%29">handler</a> for the <a href="page.php?w=system_call">system call</a> <code>execve()</code>. The Unix loader's tasks include:</p>

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