Is there a way to find out with what parameters did the kernel boot?

For example if I specify noexec=off at the grub command line? Can I see this sort of info after the system has finished booting

答：

You can run cat /proc/cmdline.

Example:

[:] ~ $ cat /proc/cmdline

BOOT_IMAGE=/boot/vmlinuz-2.6.--generic root=UUID=025c4231-b7bb-48bf-93e9-d20c5b5ce123 ro crashkernel=384M-2G:64M,2G-:128M quiet splash bootchart=disable acpi_enforce_resources=lax vga= vt.handoff=

转自： http://askubuntu.com/questions/32654/how-do-i-find-the-boot-parameters-used-by-the-running-kernel