如何在Linux中为sed命令设置临时文件目录? [英] How to set temp file directory for sed command in linux?

问题描述

我有bash脚本，它会像这样修改文件

I have bash script which modified file like this

sed -i "/hello world/d" /etc/postfix/virtual

，然后从Web应用程序运行了该脚本.sed命令在该目录中创建临时文件，但是Web应用程序所在的用户无权在该目录中创建文件.我不想为该文件夹的用户提供更多权限.可以为sed命令指定临时文件位置吗?

and I ran this script from web application. sed command create temporary file in that directory but user under which web application works doesn't have permissions to create files in that directory. I do not want to give more permissions for the user to that folder. Is it possible to specify temp file location for sed command?

我是Linux的新手，如果我的问题太简单了，但是我没有找到任何解决方案，那么对不起.

I am new in linux so sorry if my question is too easy but I didn't find any solution.

谢谢！

推荐答案

该文件必须通过临时文件进行修改，这实际上是sed的工作，但缺少权限.

The file must be modified via temporary file, this is actually what sed was doing but it lacked permissions.

在处理这种情况时，我们只是手动执行此过程.

When dealing with such a situation, we just do this process manually.

## TEMP File
TFILE=`mktemp --tmpdir tfile.XXXXX`
trap "rm -f $TFILE" 0 1 2 3 15

##
sed 's_XXX_YYY_' /etc/example > "$TFILE"
cat "$TFILE" > /etc/example

## trap Deletes TFILE on Exit

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