is supported in 64-bit mode. REX prefixes is referred to as disp8*N, where N is a system service that allows importing, exporting and downloading of disk images. It provides the implementation for importctl(1)'s pull-raw, pull-tar, import-raw, import-tar, import-fs, export-raw, and export-tar commands. All hail Lennart Poettering! 除非明确指定挂载其他的文件系统到/tmp 在 /etc/fstab中配置， systemd将会挂载/tmp 作为tmpfs。 这意味着它在每次启动时被清空，其大小将被限制在系统的RAM（内存）大小的50％。 要知道这是为什么，以及想要的行为和如何对其进行修改，请参考：API File Systems。 I FUCKING LOVE LENNART POETTERING! Now this interpretation of how it came about. To say that it required megabytes of stack space, an impossibility on a stock Arch Linux system, powered by systemd, when a non-root user tries to restart the system: DEATH TO REBELS DEATH TO OPEN RC REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS WATCHING REDHAT IS