Does OS X (Snow Leopard in particular) have an equivalent to (some versions of) Linux's /dev/shm
, ie something where you can write to and read from a file without necessarily touching the hard drive?
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问题:
回答1:
You can create and mount a ram based disk as follows:
Create a disk
$ hdiutil attach -nomount ram://$((2 * 1024 * SIZE_IN_MB))
hdiutil
will return the name of the ramdisk.Format and mount the disk
diskutil eraseVolume HFS+ RAMDisk NAME_OF_DISK
Creating a 100MB ramdisk:
$ hdiutil attach -nomount ram://$((2 * 1024 * 100))
/dev/disk3
$ diskutil eraseVolume HFS+ RAMDisk /dev/disk3
Started erase on disk3
Unmounting disk
Erasing
Initialized /dev/rdisk3 as a 100 MB case-insensitive HFS Plus volume
Mounting disk
Finished erase on disk3 RAMDisk
Original source: http://www.frederico-araujo.com/2008/12/18/blazing-fast-firefox-using-osx-ramdisk/