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- <html>
- <head>
- <title>farm</title>
- <body bgcolor=#ffffff>
- <h2 align=center>farm</h2>
- <h4 align=center>OS/161 Reference Manual</h4>
- <h3>Name</h3>
- farm - run some hogs and cats
- <h3>Synopsis</h3>
- /testbin/farm
- <h3>Description</h3>
- farm runs three copies of <A HREF=hog.html>hog</A> and one copy of
- <A HREF=../bin/cat.html>/bin/cat</A>.
- <p>
- The cat process reads and prints the file <strong>catfile</strong>,
- which you should create in advance.
- <h3>Requirements</h3>
- farm uses the following system calls:
- <ul>
- <li> <A HREF=../syscall/fork.html>fork</A>
- <li> <A HREF=../syscall/execv.html>execv</A>
- <li> <A HREF=../syscall/write.html>write</A>
- <li> <A HREF=../syscall/_exit.html>_exit</A>
- </ul>
- The cat subprocess spawned by farm uses these additional system calls:
- <ul>
- <li><A HREF=../syscall/open.html>open</A>
- <li><A HREF=../syscall/read.html>read</A>
- <li><A HREF=../syscall/close.html>close</A>
- </ul>
- farm is only likely to be useful for testing the scheduler.
- <h3>Bugs</h3>
- farm does not wait for its child processes to finish.
- </body>
- </html>
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