在 Linux 系統啟動時，會在屏幕上顯示許多與硬件有關的信息，這些信息記錄在 /var/log/dmesg 文件中，也可以用 dmesg 命令來查看
[root@localhost]# head /var/log/dmesg Initializing cgroup subsys cpuset Initializing cgroup subsys cpu Linux version 2.6.32-696.6.3.el6.x86_64 (mockbuild@c1bl.rdu2.centos.org) ...... Command line: ro root=/dev/vda1 console=ttyS0 console=tty0 printk.time=1 ...... ......
[root@localhost]# dmesg | head Initializing cgroup subsys cpuset Initializing cgroup subsys cpu Linux version 2.6.32-696.6.3.el6.x86_64 (mockbuild@c1bl.rdu2.centos.org) ...... Command line: ro root=/dev/vda1 console=ttyS0 console=tty0 printk.time=1 ...... ......