GScript File Handling?

[Raeiphon]

I'm currently trying to script a CRC check that works on images - basically gets the byte size of the original image and compares it to the player's image, if it's over or under, the file gets deleted and is replaced with the original, if it isn't then it goes on as normal.

I can do this fairly easily - one problem: I don't know of a command/variable that deals with files in gscript. Could someone point me towards a wiki article or the proper syntax/commands to do so? It'd be greatly appreciated.