本文介绍了包含文件通配符猛砸变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个变量包含wildarded文件描述符:

I have a variable containing wildarded file descriptors:

FORMATS='*.mobi *.pdf *.txt *.epub *.lit'

它获取具有相应的文件扩展如果我写

It gets expanded with the appropriate files if I write

echo $FORMATS

如果我引用它保留其字符串值

and retains its string value if i quote it

echo "$FORMATS"

现在,我需要操纵它作为一个字符串,我这样做。

Now, I need to manipulate it as a string and I do this.

SUBST=`echo "$FORMATS" | sed "s/$1//"`

问题是,在``的文件遭到反正扩大。如何prevent呢?谢谢你。

The problem is that within `` the files get expanded anyway. How to prevent this? Thanks.

推荐答案

没有,它不会得到扩展!

No, it doesn't get expanded!

什么你可能做的是用 SUBST 不带引号(如:回声$ SUBST ),然后它会扩大...使用$ SUBST

What you are probably doing is using SUBST without quotes (eg: echo $SUBST) and then it gets expanded... use "$SUBST".

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10-16 13:28