View first two lines of a file

head -2 file

tail -2 file # for last 2 lines

View in real time what is added to a file. -f stands for Follow

tail -f /var/log/messages

<p class=”intro”>This command will let you watch a log file for changes as soon as they happen.</p>

<pre><code class=”cli”>
tail -f log/development.log
</code></pre>

[tags]log,listen,watch,tail,command,linux,cli[/tags]