grep 2

grep/0_Case_insensitive_search/info

@@ -1,5 +1,4 @@
-The *grep* filter searches a file for a particular _pattern_ of _characters_, and displays all lines that contain that pattern. 
-
-The pattern that is searched in the file is referred to as the *__regular expression__* (grep stands for globally search for regular expression and print out).
+The -i option enables to search for a string case insensitively in the give file. 
 
+It matches the words like “JORDAN”, “Jordan”, “jordan”.
  

grep/intro

@@ -1,2 +1,7 @@
 How to use "grep" command on Unix/Linux operating systems.
 Here you can find descriptions with simple examples of the "grep" command.
+
+The *grep* filter searches a file for a particular _pattern_ of _characters_, and displays all lines that contain that pattern.
+  
+The pattern that is searched in the file is referred to as the *__regular expression__* (grep stands for globally search for regular expression and print out).
+