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Linux Commands : A practical reference

CommandDescription •apropos whatisShow commands pertinent to string. See also threadsafe •man -t ascii | ps2pdf - > ascii.pdfmake a pdf of a manual page  which commandShow...

Unix / Linux Cheat Sheet

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Essential Linux/Unix Commands

Unix is the now one of the most commonly used Operating System used for various purposes such as Personal use, Servers, Smartphones and many more.It was developed in 1970’s...

Message Digest

The particular message digest will change if the file changes. Not only can message digests help determine file changes, but can also assist in locating duplicate files. Message digests...

Custom LoginModule in Tomcat

Tomcat manages application security through the concept of realm. A realm is a coherent package of name password pairs that identify valid users for a web application.Tomcat’s default realm...