如何使用引号将可变数量的命令行参数解析为 eval? [英] How to parse a variable number of command line arguments with quotes into eval?

问题描述

我得到了这个简单的脚本:

I got this simple script:

#!/usr/bin/env bash
eval "${@:2}"

while [ true ]
do
    FocusApp=`xdotool getwindowfocus getwindowname`

    if [[ "$FocusApp" == *"$1"* ]];
    then
        wmctrl -ir $(xdotool getactivewindow) -b add,maximized_vert,maximized_horz
        break
    fi
done

我是这样运行的:

$ ./maximize.sh "Sublime Text" /usr/bin/subl -n "./My File With Spaces in the Name"

但是当我运行它时，Sublime Text 尝试打开一个名为 My 的文件，另一个名为 File 的文件，等等.如果我替换eval "${@:2}" 与:

But when I run it, Sublime Text tries to open a file named My, another named File, and etc. If I replace the eval "${@:2}" with:

eval "\"$2\" \"$3\" \"$4\" \"$5\" \"$6\" \"$7\" \"$8\""

然后，Sublime Text 正确打开文件 "./My File With Spaces in the Name".如何使 eval 正确理解所有带有可变数量命令行参数的参数引号，即，无需硬编码 "\"$2\" \"$3\" \"$4\" ..."?

Then, Sublime Text correctly opens the file "./My File With Spaces in the Name". How to make eval correctly understand all argument quotes with a variable number of command line arguments, i.e., without hard coding "\"$2\" \"$3\" \"$4\" ..."?

推荐答案

把 eval 放在外面会更容易:

It's easier to just leave eval out of it:

#!/usr/bin/env bash
"${@:2}"

示例:

$ ./myscript "Demo" 'printf' 'This is one argument: %s\n' 'One long arg' 'Another, with * and such'
This is one argument: One long arg
This is one argument: Another, with * and such

这篇关于如何使用引号将可变数量的命令行参数解析为 eval?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！