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# cd /lib/modules/$(uname -r)/build/
# pwd

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HelloWorld
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#include <linux/init.h>
#include <linux/module.h>
MODULE_LICENSE(“Dual MPL/GPL”);
static int hello_init(void)
{
printk(KERN_ALERT “Hello, world\n”);
return 0;
}
static void hello_exit(void)
{
printk(KERN_ALERT “Goodbye cruel world\n”);
}
module_init(hello_init);
module_exit(hello_exit);
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Makefile
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obj-m = hello.o
KERNELDIR ?= /lib/modules/$(uname -r)/build
Makefile
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obj-m
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hello.ko
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