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少时犹不忧生计，老后谁能惜酒钱？

The kernel is the core of an operating system.

KVM, Kernel-based Virtual Machine, is a hypervisor built into the Linux kernel.

Non-volatile random-access memory (NVRAM) is random-access memory that retains data without applied power.

A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on.

sudo wget https://raw.

She couldn't put off the deaded moment forever.

忆梅下西洲，折梅寄江北。

梦后楼台高锁，酒醒帘幕低垂。