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char * getCurrProPath() {
	char * buf = new char[1024];
        int n;
        n = readlink("/proc/self/exe", buf, 1024);
        if (n < 0 || n > 1024){
                printf("Cannot get current pro path!\n");
                delete buf;
                return NULL;
        }   
    
        for (int i = n; i >=0; --i) {
                if (buf[i] == '\') {
                        buf[i] = '\0';
                        break;
                }   
        }   
        return buf;
}