====== Here documents or heredoc ======

===== Multi-line message using cat =====

<code>
#!/bin/sh
cat << FOOBAR123
Line 1
Line 2
Line 3
FOOBAR123
</code>

===== Multi-line message using cat,  with tabs suppressed =====

<code>
#!/bin/sh
cat << -FOOBAR123
	Line 1
	Line 2
	Line 3
FOOBAR123
</code>

===== Multi-line message using cat, with replaceable parameters =====

<code>
#!/bin/sh
NAME=Hugo
cat << FOOBAR123
Line 1
Name is $NAME
Line 3
FOOBAR123
</code>

===== Multi-line message using cat, with parameters turned off =====

<code>
#!/bin/sh
cat << 'FOOBAR123'
Line 1
Name is $1
Line 3
FOOBAR123
</code>

==== Links ====
  * http://tldp.org/LDP/abs/html/here-docs.html