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I am a COMPLETELY new user to linux and have been using most of my programs through wine. Take for example this program : http://www.atlauncher.com/download/jar/ which, when unpacked has no executable files. I'm not sure if I am looking for the wrong type of file but I would really appreciate some help on how to get downloads like this with no obvious runnable files up and running.

Thanks in advance

saiarcot895
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Matthew
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2 Answers2

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That particular file you have downloaded is a Java file; by default, Linux, will not grant executable rights to files - you need to grant that privilege.

Quick answer

A) You need Java (unless you have that):

sudo apt-get install openjdk-7-jre

B) You'll need to correct the permissions:

cd ~/Downloads/
chmod +x <file>.jar

C) To run: java -jar <file>

Ash
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You don't extract .jar files, because they are Java Archives and should therefore be executed using Java (or in case of a library included in your project). Ubuntu opens .jar using the Archive Manager by default because it is actually a ZIP file.

So you should install Java first. If you haven't already, you can execute the following commands to install OpenJDK (an open source version of Java):

sudo apt-get update
sudo apt-get install openjdk-7-jre

Now you can open the .jar file using java -jar file.jar in the terminal or by double clicking it in your file manager.

Louis Matthijssen
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