linux designed as a single core, but the use of micro-kernel design kernel associated two folders / proc / SYS setting operating parameters of the kernel method echo of VALUE> / proc / sys / the To / somefile SYSCTRL of VALUE = -w kernel.HOSTNAME modify the contents of the file / proc folder and can be modified to take effect immediately, but lost to restart modify /etc/sysctrl.conf files can be stored permanently, but can not take effect immediately correct approach is to modify the file after execution sysctrl -p command to reread the kernel profile sysctrl -a Show all parameters and their values kernel kernel module management modprobe MOD_NAME loading a module modprobe -r MOD_NAME unload a module modinfo MOD_NAME viewing module specific information insmod / PATH / tO / MODULE_FILE loading module rmmod MOD_NAME unloading module depmod / PATH / TO / MODULES_DIR view the module dependencies