bash Shell Scripting：使用变量定义路径
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Shell Scripting: Using a variable to define a path
提问by Nonameghost
My problem lies with my confusion with shell variables.
我的问题在于我对shell variables 的困惑。
To my understanding, variables allow me to store a value (String in this case) and to call it later in my code. So if I wanted to have a variable that holds the pathto some set of scripts, I could ideally just store it like this:
据我了解，变量允许我存储一个值（在本例中为 String）并稍后在我的代码中调用它。因此，如果我想要一个变量来保存某些脚本集的路径，那么理想情况下我可以像这样存储它：
SPTH = '/home/Foo/Documents/Programs/ShellScripts/Butler'
//Later on in the script//
cd $SPTH
./script1
What I'm trying to do, with probably the wrong syntax, is to set the path to variable SPTH.
我试图做的，可能是错误的语法，是将路径设置为variableSPTH。
Then I use cdwith argument $SPTH.
然后我使用cdwith argument $SPTH。
Ideally this would allow me to run the file there without typing in the path. However it doesn't work. The $SPTHis ignored and the result is as if cdwas used alone.
理想情况下，这将允许我在不输入路径的情况下在那里运行文件。但是它不起作用。该$SPTH被忽略，结果是，如果cd是单独使用。
So what am I doing wrong? And what would be a way to do this?
那么我做错了什么？有什么办法可以做到这一点？
回答by Web User
Don't use spaces...
不要使用空格...
(Incorrect)
（不正确）
SPTH = '/home/Foo/Documents/Programs/ShellScripts/Butler'
(Correct)
（正确的）
SPTH='/home/Foo/Documents/Programs/ShellScripts/Butler'
