From e9f623d8aaf39827a94a44f569e77b7547b5bf93 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Sun, 9 Jun 2013 14:02:11 -0400
Subject: [PATCH] Add early draft of a man page.

---
 doc/man1/email-validator.1 | 51 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 doc/man1/email-validator.1

diff --git a/doc/man1/email-validator.1 b/doc/man1/email-validator.1
new file mode 100644
index 0000000..3e56741
--- /dev/null
+++ b/doc/man1/email-validator.1
@@ -0,0 +1,51 @@
+.TH email-validator 1
+
+.SH NAME
+email-validator \- Perform basic syntax and deliverability checks on email addresses.
+
+.SH SYNOPSIS
+
+\fBemail-validator\fR [\fB\-h\fR] [\fB-i \fIFILE\fR] [\fB-o \fIFILE\fR] \fI<input>\fR
+
+.SH INPUT
+
+.P
+The \fIinput\fR (default: stdin) should be a list of email addresses,
+one per line. Empty lines will be ignored.
+
+.SH OUTPUT
+
+.P
+Valid email addresses will be written to the output file (default:
+stdout), one per line.
+
+.SH DESCRIPTION
+
+.P
+We check the validity of an email address using three techniques:
+
+.IP \[bu] 2
+We ensure that the length of local and domain parts is within the
+RFC-specified limits.
+
+.IP \[bu]
+A regular expression is used to check for invalid characters and syntax.
+
+.IP \[bu]
+We confirm the existence of a MX record for the domain part of the
+address.
+
+.SH OPTIONS
+
+.IP \fB\-\-input\fR,\ \fB\-i\fR
+Specify the input file containing a list of email addresses, rather
+than using stdin (the default).
+
+.IP \fB\-\-output\fR,\ \fB\-o\fR
+Specify the output file to which the good addresses will be written,
+rather than using stdout (the default).
+
+.SH BUGS
+
+.P
+Send bugs to michael@orlitzky.com.
-- 
2.43.2