====== Tar ======
Create zip file /tmp/plop.tgz from /tmp/plop/ :
<code>
tar czf /tmp/plop.tgz /tmp/plop/
</code>
Extract zip file /tmp/plop.tgz in /tmp/plopiplop/ :
<code>
tar xzf /tmp/plop.tgz -C /tmp/plopiplop/.
</code>