1、先进入一下目录 cd /var/lib/dpkg 2、再删除文件 sudo mv info info.baksudo 3、最后重新创建info mkdir info
typedef enum { SUCCESS = 0, ERROR_DIVIDE_BY_ZERO, ERROR_INVALID_INPUT, // 其他错误... } ErrorCode; ErrorCode divide(int a, int b) { if (b == 0) { return ERROR_DIVIDE_BY_ZERO; } // 其他检查... return SUCCESS; } 通过这种方式,可以更精确地识别和处理各种错误情况。
在编写带有return语句的函数时要小心检查所有的代码路径(Code Path)。有些代码路径在任何条件下都执行不到,这称为Dead Code,例如把&&和||运算符记混了(据我了解初学者犯这个低级错误的不在少数),写出如下代码: void foo(int x, int y) { if (x >= 0 || y >= 0) { printf("both x and y are ...
Linux grep return code The exit code is 1 because nothing was matched by grep. EXIT STATUS The exit status is 0 if selected lines are found, and 1 if not found. If an error occurred the exit status is 2. (Note: POSIX error handling code should check for '2' or greater.) The outp...
pid: %d, ppid: %d\n",getpid(),getppid());sleep(1);cnt--;}exit(1);}int status=0;pid_t rid=waitpid(id,&status,0);// 阻塞等待if(rid>0){printf("wait success, rid: %d, status: %d, exit_signal: %d, exit_code: %d\n",rid,status,status&0x7f,(status>>8)&0xff);}return0;...
Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.
grpc code返回码201返回码 了解基本http状态码。HTTP状态码是服务器和客户端之间交流信息的语言。1XX系列指定客户端应相应的某些动作,代表请求已被接受,需要继续处理。由于 HTTP/1.0 协议中没有定义任何 1xx 状态码,所以除非在某些试验条件下,服务器禁止向此类客户端发送 1xx 响应。2XX系列代表请求已成功被服务器...
LF Edge Launches New Sandbox to Accelerate Code Deployment of Open Source Edge and... September 19, 2023 Linux Foundation and ETSI Further Collaborate to Drive Harmonization Across Open Source and Open... September 19, 2023 Linux Foundation Telco API Project, CAMARA, Graduates to Funded Model wit...
/*初始化串口通信设置*/|-->console_init_f(common/console.c) /*初始化控制台*/|-->...|-->relocate_code(arch/arm/lib/relocate.S) /*主要完成镜像拷贝和重定位*/|-->relocate_vectors(arch/arm/lib/relocate.S)/*重定位向量表*/|-->board_init_r(common/board_r.c)/*板级初始化*/|-->in...
(1)检查网卡状态 ifconfig ping一下网卡IP,确定网卡是可以连通的。 (2)查看是不是支持多队列网卡 cat/proc/interrupts | grep eth0 多队列网卡是支持多队列中断的;只支持一个中断是无法使用dpdk的。 (3)导出dpdk环境变量 cddpdk路径# 如dpdk/dpdk-stable-19.08.2/#切换root权限sudosuexportRTE_SDK=dpdk路径ex...