if [ $return_code -eq 0 ]; then # 返回码为0,执行成功的处理逻辑 else # 返回码非0,执行失败的处理逻辑 fi 并发执行:可以使用bash的后台执行和等待命令来实现并发执行多个任务。例如,可以使用以下语句将命令放入后台执行: 代码语言:txt 复制 command1 & command2 & 然后可以使用wait命令等待所有后台任务执行...
bash shell process exit-code return-code $ beep; echo $? Command 'beep' not found, but can be installed with: apt install beep Please ask your administrator. 127 $ cat test.sh #!/usr/bin/env bash echo $? 我的脚本的预期输出应该是“127”。 那么,为什么以同样的方式执行bash脚本后,打...
return_code = result.returncode stdout = result.stdout stderr = result.stderr 错误处理:根据返回码和输出结果,可以进行相应的错误处理或结果判断。 下面是一个示例,演示如何使用Python子进程运行bash命令: 代码语言:txt 复制 import subprocess def run_bash_command(command): result = subprocess.run(command,...
img002.jpg img451.jpg do echo "picture is equal to $picture" done echo "" echo "Array:" stooges=(curly larry moe) for stooge in ${stooges[*]} do echo "Current stooge: $stooge" done echo "" echo "Command substitution:" for code in $(ls) do echo "$code is a bash script" ...
While ShellCheck is mostly intended for interactive use, it can easily be added to builds or test suites. It makes canonical use of exit codes, so you can just add ashellcheckcommand as part of the process. For example, in a Makefile: ...
但是,Bash 会忽略这个错误,继续往下执行。set+e # +e表示关闭-e选项,set-e表示重新打开-e选项command1command2set-e# 脚本只要发生错误,就终止执行 set-x #用来在运行结果之前,先输出执行的那一行命令set-o xtrace#与set-x等价 Unix命令同样可以在bash脚本中使用...
According to the above table, exit codes1 - 2, 126 - 165, and 255[1]have special meanings, and should therefore be avoided for user-specified exit parameters. Ending a script withexit 127would certainly cause confusion when troubleshooting (is the error code a"command not found" or a user...
可以像构建MAP一样构建JSON对象 # 示例: # JSON_BUILDER key1 val1 key2 '{"key":"value"}' # # https://unix.stackexchange.com/questions/686785/unix-shell-quoting-issues-error-in-jq-command # https://stackoverflow.com/questions/70617932/bash-script-to-add-a-new-key-value-pair-dynamically-...
#os.system(command):该方法在调用完shell脚本后,返回一个16位的二进制数, #低位为杀死所调用脚本的信号号码,高位为脚本的退出状态码, #即脚本中exit 1的代码执行后,os.system函数返回值的高位数则是1,如果低位数是0的情况下, #则函数的返回值是0x0100,换算为十进制得到256。
值并发生重复赋值时,bash会覆盖该键。这 允许我们有效地删除数组重复。 CAVEAT:需要bash4+ 示例功能: remove_array_dups() { # Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 ...