macos OS X 是否与 /dev/shm 等效？
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Does OS X have an equivalent to /dev/shm?
提问by Andrew Grimm
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?
OS X（特别是Snow Leopard）是否与（某些版本的）Linux 等效/dev/shm，即您可以在不接触硬盘驱动器的情况下写入和读取文件的东西？
回答by adamse
You can create and mount a ram based disk as follows:
您可以创建和挂载基于 ram 的磁盘，如下所示：
Create a disk
$ hdiutil attach -nomount ram://$((2 * 1024 * SIZE_IN_MB))hdiutilwill return the name of the ramdisk.Format and mount the disk
diskutil eraseVolume HFS+ RAMDisk NAME_OF_DISKAccess the disk under
/Volumes/<diskname>cd /Volumes/RAMDisk && touch testfile.txt && ls
创建磁盘
$ hdiutil attach -nomount ram://$((2 * 1024 * SIZE_IN_MB))hdiutil将返回 ramdisk 的名称。格式化并挂载磁盘
diskutil eraseVolume HFS+ RAMDisk NAME_OF_DISK访问下的磁盘
/Volumes/<diskname>cd /Volumes/RAMDisk && touch testfile.txt && ls
Creating a 100MB ramdisk:
创建一个 100MB 的 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/
原始来源：http: //www.frederico-araujo.com/2008/12/18/blazing-fast-firefox-using-osx-ramdisk/
