Exit status 127 tells you that one of two things has happened: Either the command doesn't exist, or the command isn't in your path ($PATH). This code also appears if you attempt to execute a command that is in
shift # 跳过后面的值;;--default)#如果参数是这个,脚本会将变量DEFAULT设置为YESDEFAULT=YESshift # 跳过参数;;-*|--*)#如果参数是以-或--开头且未知的选项,打印错误信息并退出 echo"Unknown option $1"exit1;;*)#对于所有其他非选项参数(即位置参数),将它们逐一添加到POSITIONAL_ARGS数组中,POSITIONAL_ARGS...
command -v curl >/dev/null 2>&1; then echo -e "\033[31mcurl命令不存在,正在下载安装!\033[0m" if os="ubuntu"; then apt install -y curl >/dev/null 2>&1 elif os="centos"; then yum install -y curl >/dev/null 2>&1 elif os="fedora"; then dnf install -y curl >/dev/null...
格式:-X <command> 或--request <command> 说明:-X 参数允许用户显式指定要使用的 HTTP 方法(如 GET、POST、PUT、DELETE 等)。如果不使用 -X 参数,curl 默认使用 GET 方法。 示例: curl -X POST http://www.example.com/api/data 在这个例子中,curl 会向目标 URL 发送一个 POST 请求。 区别总结 功...
Code:#!/bin/bash # Command to execute command_to_execute="ls /new_dir" # Execute the command $command_to_execute # Get the exit status code exit_status=$? # Print the exit status code echo "Exit status code: $exit_status" Copy...
get_functions() { # Usage: get_functions IFS=$'\n' read -d "" -ra functions < <(declare -F) printf '%s\n' "${functions[@]//declare -f }" }绕过shell别名# alias ls # command # shellcheck disable=SC1001 \ls绕过shell函数
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 ...
$? Operator gives the exit status code To check the exit status in bash, you can user the specific operator $?, for example here, we check if there is an ldaps server(not ldap but ldaps !!!) root@kali:~# cat /etc/ldap/ldap.conf BASE dc=example,dc=com URI ldap://ldap.example...
这与command | myscript.sh或myscript.sh | command有关。请参阅此答案以获得解决方案。 当心read -r以防止读行溢出。 一个普通问题至少有五个答案。 取决于 符合POSIX:可以在具有通用shell环境的差系统上工作 bash-specific:使用所谓的bashims 如果你想要 ...
Conclusion Each shell command returns an exit code when it terminates. Theexitcommand is used to exit a shell with a given status. If you have any questions or feedback, feel free to leave a comment. bashterminal If you like our content, please consider buying us a coffee. ...