added links to PDF/EPUB versions

Author: learnbyexample

README.md

@@ -1,3 +1,13 @@
+# Release offers
+
+To celebrate my latest ebook release, you can download [Computing from the Command Line](https://learnbyexample.gumroad.com/l/cli_computing) for FREE till 08-Nov-2022.
+
+Some of my ebooks and bundles are on sale as well till 08-Nov-2022:
+
+* [Command line text processing with GNU Coreutils](https://learnbyexample.gumroad.com/l/cli_coreutils/cli_computing_release) is FREE
+* [Magical one-liners](https://learnbyexample.gumroad.com/l/oneliners/cli_computing_release) bundle is $5 (normal price $15) — grep, sed, awk, perl and ruby one-liners
+* [All books bundle](https://learnbyexample.gumroad.com/l/all-books/cli_computing_release) is $10 (normal price $28) — all my 13 programming ebooks
+
 # Computing from the Command Line
 
 This book aims to teach Linux command line tools and Shell Scripting for beginner to intermediate level users. The focus is towards managing your files and performing text processing tasks. Topics like system administration and networking won't be discussed, but some details might get covered in future versions of this book.
@@ -20,13 +30,20 @@ See [Version_changes.md](./Version_changes.md) to keep track of changes made to
 
 # E-book
 
-For web version of the book, visit https://learnbyexample.github.io/cli-computing/
+* You can purchase the book using these links:
+   * https://learnbyexample.gumroad.com/l/cli_computing
+   * https://leanpub.com/cli_computing
+* You can also get the book as part of these bundles:
+   * **All books bundle** from https://learnbyexample.gumroad.com/l/all-books
+        * Includes all my programming books
+* See https://learnbyexample.github.io/books/ for list of other books
 
-* Links to pdf/epub versions of the book will be added once they are done
-* See https://learnbyexample.github.io/books/ for a list of my other books
+For a preview of the book, see [sample chapters](https://github.com/learnbyexample/cli-computing/blob/master/sample_chapters/cli_computing_sample.pdf)
 
 The book can also be [viewed as a single markdown file in this repo](./cli_computing.md). See my blogpost on [generating pdf from markdown using pandoc](https://learnbyexample.github.io/customizing-pandoc/) if you are interested in the ebook creation process.
 
+For web version of the book, visit https://learnbyexample.github.io/cli-computing/
+
 <br>
 
 ## Feedback and Contributing