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Linux Çý¶¯ hello

#include <linux/module.h>
MODULE_LICENSE("GPL");
static void hello_init(void);
static void hello_exit(void);
static void hello_init(void)
{
     printk("init");
}
static void hello_exit(void)
{
    printk("exit");
}
.
module_init(hello_init);
module_exit(hello_exit);
makefile:
obj-m := hello.o
PWD := $(shell pwd)
KERNELDIR = /lib/modules/2.6.24-26-generic/build
default:
           make -C $(KENELDIR) M=$(PWD) modules
ubuntu superuser sudo -s -H


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net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 1200
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_max_tw_buckets = 5000
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