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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
int main(int argc, const char *argv[]) {
int fd = open("/dev/watchdog", O_WRONLY);
if (fd == -1) {
perror("watchdog");
exit(1);
}
while (1) {
write(fd, "\0", 1);
fsync(fd);
sleep(10);
}
}
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