Linux Shell Scripting Cookbook - Third Edition

How to do it...

Let's go through a shell script to parse the RSS feeds for Gmail to display the unread mails:

#!/bin/bash 
#Desc: Fetch gmail tool 

username='PUT_USERNAME_HERE' 
password='PUT_PASSWORD_HERE' 

SHOW_COUNT=5 # No of recent unread mails to be shown 

echo 
curl -u $username:$password --silent \
    "https://mail.google.com/mail/feed/atom" | \
     tr -d '\n' | sed 's:</entry>:\n:g' |\ 
     sed -n 's/.*<title>\(.*\)<\/title.*<author><name>\([^<]*\)<\/name><email>
 \([^<]*\).*/From: \2 [\3] \nSubject: \1\n/p' | \ 
head -n $(( $SHOW_COUNT * 3 ))

The output resembles this:

$ ./fetch_gmail.sh
From: SLYNUX [ [e-mail] ]
Subject: Book release - 2

From: SLYNUX [ [e-mail] ]
Subject: Book release - 1 
.
... 5 entries

If you use a Gmail account ...