host: Use ArgsParser to parse arguments, and add man page (#1252)

Fixes #1246.

1 files changed, 25 insertions, 0 deletions

diff --git a/Base/usr/share/man/man1/host.md b/Base/usr/share/man/man1/host.md
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+## Name
+
+host - DNS lookup utility
+
+## Synopsis
+
+```**sh
+$ host <name>
+```
+
+## Description
+
+`host` is a simple utility for performing DNS lookups. It is used to
+convert names to IP addresses and vice versa.
+
+`name` is the domain name that is to be looked up. It can also be a
+dotted-decimal IPv4 address, in which case `host` will perform a reverse
+lookup for that address.
+
+## Examples
+
+```sh
+$ host github.com
+$ host 8.8.8.8
+```