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#include "head.h"
int main(int argc,char * argv[])
{
if(argc != 2)
{
printf("Usage: tempc <command>\n");
printf("command:\n");
printf(" start (start daemon)\n");
printf(" stop (stop daemon)\n");
printf(" lon (turn on led lights)\n");
printf(" loff (turn off led lights)\n");
printf("To disbale led light, create /root/light_off file\n");
return 0;
}
else if(argc ==2)
{
if(strcmp(argv[1],"start") == 0)
{
if(access(PID_FILE,F_OK) == 0)
{
printf("The program has already started\n");
return -1;
}
system("/bin/tempcd");
return 0;
}
if(access(PID_FILE,F_OK) != 0)
{
printf("The program may not start\n");
return -1;
}
int fd_pid = open(PID_FILE,O_RDONLY);
char buf[MAX_SIZE];
read(fd_pid,buf,MAX_SIZE);
long int pid = atoi(buf);
if(strcmp(argv[1],"stop") == 0)
kill(pid,SIGINT);
if(strcmp(argv[1],"loff") == 0)
kill(pid,SIGUSR1);
if(strcmp(argv[1],"lon") == 0)
kill(pid,SIGUSR2);
return 0;
}
}
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