Goal: Restrict content access through username and password entry. 1: Apache Utilities Package First, update your server’s package index: sudo apt updateCheck if the utilities package exists in your environment by executing the command dpkg --get-selections | grep apacheResponse: apache2-utils install libapache-pom-java installSo it exists.  But what do you do if it doesn't exist? How come I need to install apache-utils?  To restrict access you will be using a utility called...

Regular expressions (regex) are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern. The basic anchors - ^ and $ expression action ^The matches any string that starts with The end$ matches a string that ends with end ^The end$ exact string match (starts and ends with The end) pragmatic matches any string that has the text pragmatic in it   The basic quantifiers — * + ? and...