$ sudo add-apt-repository ppa:dlecan/openjdk $ sudo apt-get update $ sudo apt-get install openjdk-7-jre
$ sudo add-apt-repository ppa:dlecan/openjdk $ sudo apt-get update $sudo apt-get install openjdk-7-jdk.
JAVA_HOME=/usr/lib/jvm/java export JAVA_HOME PATH=$PATH:$JAVA_HOME/bin export PATH
$ echo $JAVA_HOME /usr/lib/jvm/java echo $PATH [probably lots of paths]:/usr/lib/jvm/java/bin
Credits : http://www.zimbio.com/the+ubuntu+guy/articles/82/How+set+JAVA_HOME+environment+variable+Ubuntu
To convert a package from rpm to debian format, use this command syntax. The sudo may not be necessary, but we’ll include it just in case.sudo apt-get install alien dpkg-dev debhelper build-essential
To install the package, you’ll use the dpkg utility, which is the internal package management tool behind debian and Ubuntu.sudo alien packagename.rpm
The package should now be installed, providing it’s compatible with your system.sudo dpkg -i packagename.deb
sudo apt-get update
sudo apt-get install virtualbox-ose-guest-utils
Prolog, which stands for PROgramming in LOGic, is the most widely available language in the logic programming paradigm. Logic and therefore Prolog is based the mathematical notions of relations and logical inference. Prolog is a declarative language meaning that rather than describing how to compute a solution, a program consists of a data base of facts and logical relationships (rules) which describe the relationships which hold for the given application. Rather then running a program to obtain a solution, the user asks a question. When asked a question, the run time system searches through the data base of facts and rules to determine (by logical deduction) the answer.
Among the features of Prolog are `logical variables' meaning that they behave like mathematical variables, a powerful pattern-matching facility (unification), a backtracking strategy to search for proofs, uniform data structures, and input and output are interchangeable.
Often there will be more than one way to deduce the answer or there will be more than one solution, in such cases the run time system may be asked find other solutions. backtracking to generate alternative solutions. Prolog is a weakly typed language with dynamic type checking and static scope rules.
Prolog is used in artificial intelligence applications such as natural language interfaces, automated reasoning systems and expert systems. Expert systems usually consist of a data base of facts and rules and an inference engine, the run time system of Prolog provides much of the services of an inference engine.
Prolog Tutorials :
