Question

我正在尝试使用osascript脚本更改我的Mac OS X桌面背景。如果我把所有东西都当作静态的，一切都很好。但是，如果我尝试引入变量，一切都会变得混乱。

我的代码如下。

#! /bin/bash

function random_wall () 
{
    path_name="/Users/Furkan/Pictures/Selection/"
    my_number=$[RANDOM%$1+1]
    my_wall="$path_name$2-$my_number.jpg"
    sec1='tell application "System Events" to set picture of every desktop to ("'
    sec1+=$my_wall
    sec2='" as POSIX file as alias)'
    sec1+=$sec2
    echo $sec1
    # This one does not work
    osascript -e $sec1
    # The one below works
    osascript -e 'tell application "System Events" to set picture of every desktop to ("/Users/Furkan/Pictures/Selection/night-3.jpg" as POSIX file as alias)'
}

hour=$(date +"%H")
if [ $hour -ge "5" ] && [ $hour -le "9" ]
then
random_wall 8 early-morning
fi

if [ $hour -ge "9" ] && [ $hour -lt "13" ] 
then
random_wall 17 morning
fi

if [ $hour -ge "13" ] && [ $hour -lt "17" ]
then
random_wall 19 midday
fi

if [ $hour -ge "17" ] && [ $hour -lt "20" ]
then
random_wall 15 afternoon
fi

if [ $hour -ge "20" ] || [ $hour -lt "5" ]
then
random_wall 19 night
fi

我检查了输出。下面的代码测试它，静态文件版本正在按预期工作。但是，当我尝试将变量作为参数传递时，我收到以下错误。

4:4: syntax error: Expected expression but found end of script. (-2741)

总而言之，我很困惑如何处理单引号和双引号参与的论据。

Answer 1

我刚刚遇到一个解决方案，我从没想过会这么容易。我需要做的就是用双引号包装我的变量名。

osascript -e "$sec1"

如何在Bash

1 个答案: