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JMRI: File Locations on Mac OS X

NOTE: Since the Mac Finder does not usually display the location of a file using a filepath, reference in this document to a file path such as "/Applications/JMRI/" means the folder "JMRI", in the folder "Applications" on the Mac startup disk.

During installation the JMRI program files can be copied to any folder on a Mac hard disk. A folder named "JMRI" in the "Applications" folder on the Mac startup disk has been used as its location in these examples.

When you click the DecoderPro icon in the "/Applications/JMRI/" folder, it starts the Mac OS X application bundle DecoderPro.app which puts together the things needed to run the JMRI program. "/Applications/JMRI/" is where JMRI finds all the files from the original download.

"[Username]" is the user name you use to log on to the Mac when running JMRI.

The first time you open JMRI, it has you fill in the preferences info and then it stores it in the file "/Users/[Username]/Library/Preferences/JMRI/DecoderProConfig2.xml" so it's there the next time you open JMRI. "/Users/[Username]/Library/Preferences/JMRI/" is where by default the JMRI program stores all the information that's specific to your particular setup.

When you read a decoder on the programming track and save the file, JMRI saves the file to the folder "/Users/[Username]/Library/Preferences/JMRI/roster/". JMRI also adds the ID of that file to a list in "/Users/[Username]/Library/Preferences/JMRI/roster/roster.xml".

When you build and store a panel it is also stored by default in "/Users/[Username]/Library/Preferences/JMRI/". This allows the JMRI files in the folder "/Applications/JMRI/" to be updated without overwriting your files.

Each program in the suite of JMRI can store files for itself in various locations. JMRI provides a facility to allow you to verify where the various files are stored. On the 'Help' menu, choose the option 'Locations...'. This will then open a window displaying the main locations for files, for example:

Preferences directory: /Users/[Username]/Library/Preferences/JMRI/ 
Program directory: /Applications/JMRI/
For more information follow these links: Files, Roster, Network files.