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---
layout: post
title: 'Writing Your Own Unix Shell'
permalink: '/writing_your_own_unix_shell/'
tags: ['unix', 'shell', 'signal', 'process']
---
<p>Writing a unix shell is a great way to familiarize with the concepts of
process control and signaling.</p>
<p>As part of 15213 (introduction to computer systems), I implemented a shell
with the following features:
<ul>
<li>quit, fg, bg and jobs built-in commands.</li>
<li>use of &amp; (foreground / background jobs).</li>
<li>catch SIGCHILD, SIGINT and SIGSTOP signals.</li>
<p><a href="/files/2002/writing_your_own_unix_shell/shell.tar.gz">source code + readme + shlab.pdf</a></p>
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