130 用Control-C来结束脚本 Control-C是信号2的致命错误, (130 = 128 + 2, 见上边) 255* 超出范围的退出状态 exit -1 exit命令只能够接受范围是0 - 255的整数作为参数 通过上面的表, 我们了解到, 退出码1 - 2, 126 - 165, 和255 [1] 都具有特殊的含义, 因此应该避免使用用户指定的退出参数. 如果...
Exit status 128 is the response received when an out-of-range exit code is used in programming. From my experience, exit status 128 is not possible to produce. I have tried multiple actions for an example, and I can't make it happen. However, I can produce an exit status 128-adjacent...
Exit status 128 is the response received when an out-of-range exit code is used in programming. From my experience, exit status 128 is not possible to produce. I have tried multiple actions for an example, and I can't make it happen. However, I can produce an exit status 128-adjacent...
echo $result exit 0 bash命令执行状态返回值 在bash中使用一个特殊的变量$?来保存上一个命令的执行状态结果。 (变量$的取值范围在0-255之间) 主要之含义: 0:正常结束 1:通用执行错误 2:误用shell命令 126:命令不可执行 127:命令未找到 128:无效退出参数 130:被ctrl-c强行中止 255:退出状态码越界 *在0-2...
如果命令被信号中断, Bash 返回状态码 128 ,加上信号码。最终,用户的错误码应该大于 191 , Bash 返回的错误码为 63 。信号码列在附录 E :信号。 代码语言:js AI代码解释 iftest!-x “$who”;then printf “$SCRIPT:$LINENO:the command $who is not available –“/“ aborting/n “>&2exit192fi ...
exit(EXIT_FAILURE); } } 编译并运行上例可以得到被强转后的状态码, 我们使用WIFEXITED判断等待的子进程是否执行成功, 然后对执行成功子进程使用WEXITSTATUS获取其退出状态. 对程序来说, 最终的退出状态就是主进程的退出状态. > gcc ecitcode.c;./a.out;echo "Parent exit status: $?" ...
(myargv[0], myargv); //child进行程序替换 exit(1); //替换失败的退出码设置为1 } //wait shell finish int status = 0; pid_t ret = waitpid(id, &status, 0); //shell等待child退出 if (ret > 0){ printf("exit code:%d\n", WEXITSTATUS(status)); //打印child的退出码 } } return ...
exit 1 fi With files #!/bin/bash touch ab c d e for i in a b c d e; do cat $i if [[ $? -ne 0 ]]; then fail=1 fi done if [[ $fail == 1 ]]; then exit 1 fi 特殊参数$?保存最后一个命令的退出值。大于0的值表示失败。所以只需将其存储在一个变量中,并在循环后检查它...
退出码(exit status,或exit code)的约定: 0表示成功(Zero - Success) 非0表示失败(Non-Zero - Failure) 2表示用法不当(Incorrect Usage) 127表示命令没有找到(Command Not Found) 126表示不是可执行的(Not an executable) >=128 信号产生 man 3 exit 写道 ...
It is important to understand that the exit code of the wait command relies on the last known operand. When a process returns an exit code that is higher than 128, it means the process terminated unusually. The case is different when you get an exit code between 1 and 126. However, if...