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copied!<p>First you need to compose the message. The bare minimum is composed of these two headers:</p> <pre><code>MIME-Version: 1.0 Content-Type: text/html </code></pre> <p>... and the appropriate message body:</p> <pre><code><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><title></title> </head> <body> <p>Hello, world!</p> </body> </html> </code></pre> <p>Once you have it, you can pass the appropriate information to the <a href="http://unixhelp.ed.ac.uk/CGI/man-cgi?mail" rel="noreferrer">mail</a> command:</p> <pre><code>body = '...' echo $body | mail \ -a "From: me@example.com" \ -a "MIME-Version: 1.0" \ -a "Content-Type: text/html" \ -s "This is the subject" \ you@example.com </code></pre> <p>This is an oversimplified example, since you also need to take care of charsets, encodings, maximum line length... But this is basically the idea.</p> <p>Alternatively, you can write your script in Perl or PHP rather than plain shell.</p> <h1>Update</h1> <p>A shell script is basically a text file with Unix line endings that starts with a line called <a href="http://en.wikipedia.org/wiki/Shebang_%28Unix%29" rel="noreferrer">shebang</a> that tells the shell what interpreter it must pass the file to, follow some commands in the language the interpreter understands and has execution permission (in Unix that's a file attribute). E.g., let's say you save the following as <code>hello-world</code>:</p> <pre><code>#!/bin/sh echo Hello, world! </code></pre> <p>Then you assign execution permission:</p> <pre><code>chmod +x hello-world </code></pre> <p>And you can finally run it:</p> <pre><code>./hello-world </code></pre> <p>Whatever, this is kind of unrelated to the original question. You should get familiar with basic shell scripting before doing advanced tasks with it. Here you are a couple of links about <strong>bash</strong>, a popular shell:</p> <p><a href="http://www.gnu.org/software/bash/manual/html_node/index.html" rel="noreferrer">http://www.gnu.org/software/bash/manual/html_node/index.html</a></p> <p><a href="http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html" rel="noreferrer">http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html</a></p>

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