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</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">spatel1-mn1:school-of-sre spatel1$ ls .git/hooks/
<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">spatel1-mn1:school-of-sre spatel1$ echo &quot;echo this is from pre commit hook&quot; &gt; .git/hooks/pre-commit
spatel1-mn1:school-of-sre spatel1$ chmod +x .git/hooks/pre-commit
<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">spatel1-mn1:school-of-sre spatel1$ echo &quot;sample file&quot; &gt; sample.txt
spatel1-mn1:school-of-sre spatel1$ git add sample.txt
spatel1-mn1:school-of-sre spatel1$ git commit -m &quot;adding sample file&quot;
<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
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