Changing the file format of a downloaded file

DarkAvenger · #1 (**permalink**) 27th February 2009, 08:40 PM

I'm wishing to view a number of Commodore 64 Koala Paint images in XnView since XnView supports Koala Paint images in either standard format (.koa) or compressed format (.gg).

The images have been downloaded from the HiResGraphics Library of GEnie Commodore File Library' - see: GEnie HiRes Graphics Listing

I've downloaded the following file:

1977 - TIGER GWAYNE 860821 11340
Desc: Koala of a tiger.

However the downloaded file TIGER doesn't display with any file extension and the file icon is blank however Get Info says the file is a plain text file. I assume if I simply add the file extension .koa XnView will then be able to properly interpret the file as a valid Koala Paint file and display the picture, yet OS X doesn't recognise .koa as a file extension or rather it thinks I want to change the name of the file to 'TIGER.koa' rather than change the actual file format since File Info still says its a plain text file.

Can anyone here help?

Huy · #2 (**permalink**) 27th February 2009, 08:43 PM

Finder Preferences > Show all file extensions

DarkAvenger · #3 (**permalink**) 27th February 2009, 09:11 PM

Quote:

Originally Posted by Huy

Finder Preferences > Show all file extensions

I thought of that already, but it makes no difference. The file still displays with no file extension.

Huy · #4 (**permalink**) 27th February 2009, 09:12 PM

Use Terminal/mv.

DarkAvenger · #5 (**permalink**) 27th February 2009, 09:27 PM

Quote:

Originally Posted by Huy

Use Terminal/mv.

I know nothing about using Terminal. What command structure do I use to change the format of a file?

Huy · #6 (**permalink**) 27th February 2009, 10:03 PM

Found this on Google,
Introduction to Unix commands - Knowledge Base

Though it would probably be the same as hitting return on the keyboard to rename.