how to append a value to a variable in shell script
<p>I am getting a variable value from properties and I am able to access in sh file.
but I am unable to append another value to that variable.</p>

<p>Kindly suggest.</p>

<pre><code>$ echo "Build ID from properties:"$BUILD_ID
Build ID from properties: abcd_v6_c1

$ echo " num----------------" build_${BUILD_ID}.zip
.zip---------------- build_abcd_v6_c1
</code></pre>

<p>Kindly suggest how to append <strong>.zip</strong> value.</p>