609Hide/Show Files in the Mac OSX GUI

Hiding files and folders from the Finder:
chflags hidden filename
And show them again:
chflags nohidden filename

445Creating a Folder

Check whether a folder exists, otherwise create it.
NSFileManager *fm = [NSFileManager defaultManager];

if (![fm fileExistsAtPath:myPath isDirectory:NULL]) {
		[fm createDirectoryAtPath:myPath withIntermediateDirectories:NO attributes:nil error:nil];

391Creating a RAM Disk in OSX

OSX 10.6.2 diskutil erasevolume HFS+ “ramdisk” `hdiutil attach -nomount ram://1000000` Would create a 500MB RAM Disk. The size is calculated in 512K Block, 512K * 1000000 = 500MB Works nicely. From here. – – – However, if you want to mount the RAM Disk at a specific point in your filesystem, the method above does not seem to work. Instead try: hdiutil attach -nomount ram://10000 Create, attach but do not mount our RAM Disk (returned /dev/disk2) newfs_hfs -v Ramdisk /dev/disk2 Name and format the disk mount -t hfs /dev/disk2 /your/path/ Mount the disk at a specific point. The address has to be absolute, and should point to an empty folder. Once mounted, the folder gets replaced by the RAM Disk. umount /dev/disk2 Unmounting by ejecting the disk does not seem to work… Sources: