Bash functions for create/mount and umount RAM partitions for Mac OS X 10.11

ram_functions.sh

# pass size in mb and optional name
function ram_disk_mb() {
  name=${2:-disk}
  diskutil erasevolume HFS+ "ram_$name" $(hdiutil attach -nomount ram://$(($1*2048)))
}

# pass size in gb and optional name
function ram_disk_gb() {
  ram_disk_mb $(($1*1024))
}

# unmount partition with given name or all partitions with the default name
function umount_ram_disks() {
  umount /Volumes/ram_*
}