<div dir="ltr">I can't speak to the 403, but for a function like exec(3), the 3 means that it's in section 3 of the manpages. So for a function that exists in multiple sections, you can type `man 3 exec` to get the proper implementation. You can find more information about the manpage sections here: <a href="http://man7.org/linux/man-pages/man7/man-pages.7.html">http://man7.org/linux/man-pages/man7/man-pages.7.html</a>, or type `man 7 man-pages`</div><br><div class="gmail_quote"><div dir="ltr">On Tue, Sep 5, 2017 at 4:57 PM Zhitao Chen <<a href="mailto:zchen69@stevens.edu">zchen69@stevens.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear Professor Schaumann,<div><br></div><div>I have some questions:</div><div><br></div><div>1. Today when I want to access the website <a href="http://www.cs.stevens.edu/~jschauma/631A" target="_blank">http://www.cs.stevens.edu/~jschauma/631A</a>, it showed me 403 Forbidden, but I can assess before. Am I miss something forget to do which you told in the class? </div><div><br></div><div>2. I notice that in slide, there is a bracket behind a function, like exec(3), fork(2), etc, what is that mean? </div><div><br></div><div>Sincerely.</div></div>
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</blockquote></div><div dir="ltr">-- <br></div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Jason Ajmo</div><div>Stevens Institute of Technology</div><div>B.S. Cybersecurity '17</div><div>M.S. Computer Science '18</div><div>0x56FA3123</div></div></div>