如何通过命令行参数存储在单个变量引号？ [英] How to pass command line parameters with quotes stored in single variable?

问题描述

我要打电话从shell脚本外部应用程序，但是这个shell脚本在一个变量获得的参数（从其他脚本）。一切都确定，直到我没有用单参数双引号，但是话用空格分隔。

下面是简化我的问题的例子（sh_param只是打印全部通过参数）：

 ＃！/ bin / sh的通过（）{
    回声与\\ $ @结果
    ./sh_param $ @
    回声与\\结果\\ $ @ \\
    ./sh_param$ @
    回声与\\ $ *结果
    ./sh_param $ *
    回声与\\结果\\ $ * \\
    ./sh_param$ *
}传'单参数单独的参数'
 

和结果（sh_param只是打印全部通过参数）：

 以$ @结果
参数：单
参数：参数
参数：独立
参数：PARAMS
用$ @结果
参数：单参数独立PARAMS
用$结果*
参数：单
参数：参数
参数：独立
参数：PARAMS
以$ *的结果
参数：单参数独立PARAMS
 

和我想要的：

 参数：单参数
参数：独立
参数：PARAMS
 

解决方案

回答我的问题。非常感谢去pzanoni。
xargs的似乎正确解析任何你扔吧:-)
$ @，$的，$ @ $和的做工不错吧。所以，我的code现在看起来像：

 ＃！/ bin / sh的通过（）{
    回声$ * | xargs的./sh_param
}传'单参数单独的参数'
 

和结果是什么，我想：

 参数：单参数
参数：独立
参数：PARAMS
 

I want to call external application from shell script, but this shell script gets parameters (from other script) in a single variable. All was OK until I did not have to use double quotes for single parameter, but words separated by space.

Here is simplified example of my problem (sh_param just prints all passed parameters):

#!/bin/sh

pass() {
    echo "Result with \$@"
    ./sh_param $@
    echo "Result with \"\$@\""
    ./sh_param "$@"
    echo "Result with \$*"
    ./sh_param $*
    echo "Result with \"\$*\""
    ./sh_param "$*"
}

pass '"single param" separate params'

and results (sh_param just prints all passed parameters):

Result with $@
Param: "single
Param: param"
Param: separate
Param: params
Result with "$@"
Param: "single param" separate params
Result with $*
Param: "single
Param: param"
Param: separate
Param: params
Result with "$*"
Param: "single param" separate params

And I want:

Param: single param
Param: separate
Param: params

解决方案

Answering my own question. BIG thanks goes to pzanoni. xargs seems to parse correctly anything you are throwing to it :-) "$@", "$", $@ and $ works good with it. So my code now looks like:

#!/bin/sh

pass() {
    echo $* | xargs ./sh_param
}

pass '"single param" separate params'

And result is what I wanted:

Param: single param
Param: separate
Param: params

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