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Im running chrubuntu, im trying to run a minecraft jar file via command (as is not possible via properties page) Whatever command Im using its telling me that no such file exists, I think this may be to do with incorrect ownership of the file? Any advice, thanks!

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You can change permissions like this.

sudo chmod 700 minecraft.jar

Than run this with java environment:

java -jar minecraft.jar

Make sure that you use the right path to .jar file. You can always drag and drop (a) file/files into terminal, instead of typing the path.

So in this case type:

sudo chmod 700 

followed by dragging minecraft.jar into terminal. Then hit Enter key.

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I just tried, its saying cannot access "minecraft.jar" no such file or directory – user265958 Apr 6 '14 at 17:30
@user265958 Are you in the location of the .jar file? Is it called minecraft.jar? – Seth Apr 6 '14 at 17:34
yes its called minecraft.jar and is on my desktop, so path would be home/myuser/desktop/minecraft.jar? – user265958 Apr 6 '14 at 17:37
@user265958 Yes. Try this command: sudo chmod 700 ~/Desktop/minecraft.jar. – Seth Apr 6 '14 at 18:04

The minecraft.jar file is actually just a launcher, it downloads the neccessary files for minecraft and puts them in the .minecraft folder of your home directory. I'm also running minecraft in chrubuntu, and it works fine. Looking at the file I downloaded, it is actually called "Minecraft.jar" (capital M), so make sure that your file is actually called "minecraft.jar".

The jar file does not require executable permissions (it only has rw permissions on my system). Try moving the file to your home folder, make sure that it is called "minecraft.jar", start a new terminal window and run

java -jar minecraft.jar

If that does not work, make sure that your user owns the file. If your username is "myuser" type

sudo chown myuser:myuser minecraft.jar
chmod +r minecraft.jar

to make sure that the file is owned my you, and that it is readable.

To make sure that the file is actually there, type

ls -la minecraft.jar

which would print something like this

-rw-rw-r-- 1 myuser myuser 280212 mar 15 16:44 minecraft.jar

If everything else fails, try downloading the file again. Good luck.

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