使用变量作为目录路径在 bash 中重定向输出
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using a variable as a directory path to redirect output in bash
提问by user3351901
I am trying to write a script that will allow the user to input the path of the directory to which they want to store a file. I have something that looks like this:
我正在尝试编写一个脚本，允许用户输入他们想要存储文件的目录的路径。我有一些看起来像这样的东西：
#! /bin/bash
echo "Enter the directory path"
read varpath
varfile="Filename"
echo "This is a file" > "$varpath$varfile"
what I want is a file in the directory path the user entered called "Filename" and has the line "This is a file" However, I am getting an error saying that there is not such file or directory. Can someone tell me whats wrong, or if there's an alternate solution to this.
我想要的是用户输入的目录路径中的一个名为“文件名”的文件，并且有一行“这是一个文件”但是，我收到一个错误消息，说没有这样的文件或目录。有人可以告诉我出了什么问题，或者是否有其他解决方案。
Thanks.
谢谢。
回答by Amit Verma
Proabably you need a /.
可能你需要一个/.
echo "This is a file" > "${varpath}/${varfile}"
You can also echothe variables to make sure they are correct
您还可以echo使用变量来确保它们是正确的
回答by Shreyas Purohit
Few things you might want to handle:
您可能想要处理的几件事：
The user input directory has the required folders, if not create them using
mkdir -pcommand.The user enters dir path that either ends with / or not. If not, you might want to add it yourself.
用户输入目录具有所需的文件夹，如果没有使用
mkdir -p命令创建它们。用户输入以 / 或不以 / 结尾的目录路径。如果没有，您可能想自己添加它。
