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<h1 id="git-with-github">Git with Github</h1>
<p>Till now all the operations we did were in our local repo while git also helps us in a collaborative environment. GitHub is one place on the internet where you can centrally host your git repos and collaborate with other developers.</p>
<p>Most of the workflow will remain the same as we discussed, with addition of couple of things:</p>
<ol>
<li>Pull: to pull latest changes from github (the central) repo</li>
<li>Push: to push your changes to github repo so that it's available to all people</li>
</ol>
<p>GitHub has written nice guides and tutorials about this and you can refer them here:</p>
<ul>
<li><a href="https://guides.github.com/activities/hello-world/">GitHub Hello World</a></li>
<li><a href="https://guides.github.com/introduction/git-handbook/">Git Handbook</a></li>
</ul>
<h2 id="hooks">Hooks</h2>
<p>Git has another nice feature called hooks. Hooks are basically scripts which will be called when a certain event happens. Here is where hooks are located:</p>
<pre><code class="language-bash">$ ls .git/hooks/
applypatch-msg.sample fsmonitor-watchman.sample pre-applypatch.sample pre-push.sample pre-receive.sample update.sample
commit-msg.sample post-update.sample pre-commit.sample pre-rebase.sample prepare-commit-msg.sample
</code></pre>
<p>Names are self explanatory. These hooks are useful when you want to do certain things when a certain event happens. If you want to run tests before pushing code, you would want to setup <code>pre-push</code> hooks. Let's try to create a pre commit hook.</p>
<pre><code class="language-bash">$ echo &quot;echo this is from pre commit hook&quot; &gt; .git/hooks/pre-commit
$ chmod +x .git/hooks/pre-commit
</code></pre>
<p>We basically create a file called <code>pre-commit</code> in hooks folder and make it executable. Now if we make a commit, we should see the message getting printed.</p>
<pre><code class="language-bash">$ echo &quot;sample file&quot; &gt; sample.txt
$ git add sample.txt
$ git commit -m &quot;adding sample file&quot;
this is from pre commit hook # &lt;===== THE MESSAGE FROM HOOK EXECUTION
[master 9894e05] adding sample file
1 file changed, 1 insertion(+)
create mode 100644 sample.txt
</code></pre>
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