When you execute a command or run a script, you receive anexit code. An exit code is a system response that reports success, an error, or another condition that provides a clue about what caused an unexpected result from your command or script. Yet, you might never know about the code,...
trap "rm -f tmpfile; echo Bye." EXIT 示例五 检查上一命令的退出码 Bash代码 ./mycommand.sh EXCODE=$? if [ "$EXCODE" == "0" ]; then echo "O.K" fi 表格D-1. "保留的"退出码 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...
echo “Command failed with exit code: $exit_code” fi “` 在这个例子中,我们使用了ls命令来示范。脚本首先执行ls命令,然后使用$?获取ls命令的返回值并将其赋值给变量exit_code。接下来,使用if语句判断exit_code的值,如果等于0,则打印”Command executed successfully”,否则打印”Command failed with exit code...
When you execute a command or run a script, you receive anexit code. An exit code is a system response that reports success, an error, or another condition that provides a clue about what caused an unexpected result from your command or script. Yet, you might never know about the code,...
退出时执行commands指定的命令。( A trap on EXIT is executed before the shell terminates.) 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) ...
#!/bin/bash # 定义要运行的命令 command_to_run="your_command_here" # 设置最大重试次数 max_attempts=3 # 设置初始重试次数 attempts=0 # 循环运行命令直到成功或达到最大重试次数 while true; do # 运行命令 $command_to_run # 检查命令的退出状态码 exit_code=$? # 如果命令成功执行,退出循环 if ...
Exit Codes With Special Meanings Table E-1. Reserved Exit Codes Exit Code NumberMeaningExampleComments 1 Catchall for general errors let &qu
使用exit命令显式设置脚本的退出代码,以便在调用脚本的地方获取到正确的退出代码。 以下是一个示例bash脚本,演示如何正确捕获退出代码%1并进行处理: 代码语言:txt 复制 #!/bin/bash # 执行命令 some_command # 获取退出代码 exit_code=$? # 判断退出代码并进行处理 ...
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VS Code version: Code - Insiders 1.71.0-insider (eebdf81, 2022-08-12T05:17:00.323Z) OS version: Windows_NT x64 10.0.19044 Modes: Sandboxed: Yes Remote OS version: Linux x64 4.15.0-169-generic When the original PROMPT_COMMAND is an array: exit code of last executed command is not ...