Performing Complex Searches and Reporting on Application Log Files
System administration duties often include installing and supporting various applications. These may be either produced by open-source communities or developed in-house. There are also a wide variety of languages used when developing those applications; common languages found these days would be Java, PHP, Python, Ruby, and (yes, some still are using it) Perl. In this chapter I talk about applications developed in Java, as this seems to be the most common language selected by large enterprises for their web applications. Java applications commonly run within the application server container, such as Tomcat, Jetty, Websphere, or JBoss.