格式化命令行参数getopt和getopts的使用 getopt: parse command options 格式:getopt options optstring parameters optstring定义了命令行有效的选项字母,还定义了哪些选项字母需要参数值。在每个需要参数值的选项字母后加一个冒号。如果要去掉错误消息的话,用-q参数。 可以用set命令使getopt命令处理后的命令行选项和参数。
5 COMMAND "This is $variable1" # COMMAND将以1个参数来执行6 # "This is a variable containing five words"7 8 9 variable2="" # 空值10 11 COMMAND $variable2 $variable2 $variable2 # COMMAND将不带参数执行12 COMMAND "$variable2" "$variable2" "$variable2" # COMMAND将以3个空参数来执行13...
We’ll modify theuserReg-positional-parameter.shscript to use flags instead of relying on positional parameters.Thegetoptsfunction reads the flags in the input, and theOPTARGvariable refers to their corresponding values: $ cat userReg-flags.sh while getopts u:a:f: flag do case "${flag}" in...
The SSH protocol always provides a remote shell where the client sends a string to execute on the server. On the client-side, the SSH command line concatenates command-line arguments with a space between them. On the server-side, the user's login shell runs the string sent by the client ...
getopts的语法如下: getopts OPTSTRING var OPTSTRING包含所有选项的字符;那些带参数的函数后跟一个冒号。对于清单 4-3 中的脚本,字符串是f:v。每个选项都放在变量$var中,选项的参数(如果有的话)放在$OPTARG中。 通常用作while循环的条件,getopts成功返回,直到它已经解析了命令行上的所有选项,或者直到它遇到单词-...
parse_params"$@"setup_colors# script logic heremsg"${RED}Read parameters:${NOFORMAT}"msg"- flag:${flag}"msg"- param:${param}"msg"- arguments:${args[*]-}" Choose Bash #!/usr/bin/env bash 脚本为了获得最佳兼容性,它引用/usr/bin/env,而不是直接引用/bin/bash。
# parse the options in the command line OPTIND=1 while getopts ":h:d:" Option do case $Option in h ) hide_dev=$OPTARG;; d ) driver=$OPTARG;; * ) usage ;; esac done echo "$hide_dev, $driver$" $ ./params_getopt.sh -h aa -d bb ...
在Bash中解析参数有两种选择。是一个接一个的。有人赞成和反对使用它们。我发现这些工具不是最好的,因为默认情况下,macOS上的getopt行为完全不同,getopts不支持长参数(比如--help)。 Using the template 复制粘贴它,就像你在网上找到的大多数代码一样。
A common task in shell scripting is to parse command line arguments to your script. Bash provides the getopts built-in function to do just that. This tutorial explains how to use the getopts built-in function to parse arguments and options to a bash scri
:, ., break, cd, continue, eval, exec, exit, export, getopts, hash, pwd, readonly, return, set, shift, test, [, times, trap, umask and unset. *Bash内建命令: alias, bind, builtin, command, declare, echo, enable, help, let, local, logout, printf, read, shopt, type, typeset...