How do I run a jar file?

[TwittyFlash]

Hi folks,

I managed to run and install the latest jre into freenas, by running it into my mounted shared drive main folder /mnt/freenas folder . After which I tried running a simple java jar file in the same place.
Only to get a response:

"java:Command not found"

Does freenas allow the running of a jar file in the first place? Was there any mistake in my steps?

Appreciate any kind advice. Thanks.

 

[danb35]

Was there any mistake in my steps?

If your steps included installing Java (or anything, really) on top of the FreeNAS system itself, yes, there was. Additional software should be installed only in a jail.

 

[Linkman]

Also make sure that the bin directory of the JRE install is in your $PATH

 

[TwittyFlash]

Any reason why this is the case? I would like the java based application to run on FreeNAS itself.

 

[SweetAndLow]

freenas is a appliance and with an appliance you don't modify the base installation. If you want to add your own custom applications you do that in a jail.

 

[TwittyFlash]

In that case, that mean I have install the Java into the Jail,which is like a partition of its own.

Isn't Java normaly installed into the usr/local folder instead? Similar to installing into the C drive of a Windows based system.

I woud like to develop programs that is able to read the status of my hardware components. Will the java based program running in jail be able to read these status?

 

[SweetAndLow]

Jails should be able to give you the information you need. Most people would not write a program that monitors hardware in java. You need to use something that is either a scripting language that calls into the system or you use something like C/C++ that has OS sys calls.

 

[TwittyFlash]

Appreciate the prompt reply!
:)I see, so suppose I use a scripting language like C/C++, and run it in the jail, it shall perform as well as though I am running on the OS itself.

 

[SweetAndLow]

Scripting language like Python OR a system language like c/c++

 

[Bidule0hm]

Scripting language like Python OR a compiled language like c/c++

FTFY :)