moved ebook info to the top

Author: learnbyexample

gnu_awk.md

@@ -1,3 +1,15 @@
+<br> <br> <br>
+
+---
+
+:information_source: :information_source: This chapter has been converted into a better formatted ebook: https://learnbyexample.github.io/learn_gnuawk/. The ebook also has content updated for newer version of the commands, includes a chapter on regular expressions, has exercises, solutions, etc.
+
+For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_gnuawk
+
+---
+
+<br> <br> <br>
+
 ## <a name="gnu-awk"></a>GNU awk
 
 **Table of Contents**
@@ -45,17 +57,7 @@
 * [Gotchas and Tips](#gotchas-and-tips)
 * [Further Reading](#further-reading)
 
-<br> <br> <br>
-
----
-
-:information_source: :information_source: This chapter has been converted into a better formatted ebook: https://learnbyexample.github.io/learn_gnuawk/. The ebook also has content updated for newer version of the commands, includes a chapter on regular expressions, has exercises, solutions, etc.
-
-For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_gnuawk
-
----
-
-<br> <br> <br>
+<br>
 
 ```bash
 $ awk --version | head -n1

gnu_grep.md

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+<br> <br> <br>
+
+---
+
+:information_source: :information_source: This chapter has been converted into a better formatted ebook: https://learnbyexample.github.io/learn_gnugrep_ripgrep/. The ebook also has content updated for newer version of the commands, includes exercises, solutions, has a separate chapter for popular alternative `ripgrep`, etc.
+
+For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_gnugrep_ripgrep
+
+---
+
+<br> <br> <br>
+
 # <a name="gnu-grep"></a>GNU grep
 
 **Table of Contents**
@@ -45,18 +57,7 @@
     * [Basic vs Extended Regular Expressions](#basic-vs-extended-regular-expressions)
 * [Further Reading](#further-reading)
 
-
-<br> <br> <br>
-
----
-
-:information_source: :information_source: This chapter has been converted into a better formatted ebook: https://learnbyexample.github.io/learn_gnugrep_ripgrep/. The ebook also has content updated for newer version of the commands, includes exercises, solutions, has a separate chapter for popular alternative `ripgrep`, etc.
-
-For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_gnugrep_ripgrep
-
----
-
-<br> <br> <br>
+<br>
 
 ```bash
 $ grep -V | head -1

gnu_sed.md

@@ -1,3 +1,15 @@
+<br> <br> <br>
+
+---
+
+:information_source: :information_source: This chapter has been converted into a better formatted ebook: https://learnbyexample.github.io/learn_gnused/. The ebook also has content updated for newer version of the commands, includes exercises, solutions, etc.
+
+For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_gnused
+
+---
+
+<br> <br> <br>
+
 # <a name="gnu-sed"></a>GNU sed
 
 **Table of Contents**
@@ -65,17 +77,7 @@
 * [Gotchas and Tips](#gotchas-and-tips)
 * [Further Reading](#further-reading)
 
-<br> <br> <br>
-
----
-
-:information_source: :information_source: This chapter has been converted into a better formatted ebook: https://learnbyexample.github.io/learn_gnused/. The ebook also has content updated for newer version of the commands, includes exercises, solutions, etc.
-
-For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_gnused
-
----
-
-<br> <br> <br>
+<br>
 
 ```bash
 $ sed --version | head -n1

ruby_one_liners.md

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+<br> <br> <br>
+
+---
+
+:information_source: :information_source: This chapter has been converted into a better formatted ebook - https://learnbyexample.github.io/learn_ruby_oneliners/. The ebook also has content updated for newer version of `ruby`, extra chapter for parsing json/csv/xml, includes exercises, solutions, etc.
+
+For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_ruby_oneliners
+
+---
+
+<br> <br> <br>
+
 # <a name="ruby-one-liners"></a>Ruby one liners
 
 **Table of Contents**
@@ -50,17 +62,7 @@
     * [Executing external commands](#executing-external-commands)
 * [Further Reading](#further-reading)
 
-<br> <br> <br>
-
----
-
-:information_source: :information_source: This chapter has been converted into a better formatted ebook - https://learnbyexample.github.io/learn_ruby_oneliners/. The ebook also has content updated for newer version of `ruby`, extra chapter for parsing json/csv/xml, includes exercises, solutions, etc.
-
-For markdown source and links to buy pdf/epub versions, see: https://github.com/learnbyexample/learn_ruby_oneliners
-
----
-
-<br> <br> <br>
+<br>
 
 ```
 $ ruby --version