prevent变量代换后通配符 [英] Prevent globbing after variable substitution

问题描述

什么是使用包含保留通配符（文件名完成）触发一些不需要替换字符shell变量（BASH）最优雅的方式？这里是例子：

What is the most elegant way to use shell variable (BASH) that contain characters reserved for globbing (filename completion) that trigger some unwanted substitutions? Here is the example:

for file in $(cat files); do
   command1 < "$file"
   echo "$file"
done

文件名包含像'['或']'字符。我有两种基本思路：

The file names contain characters like '[' or ']'. I have basically two ideas:

1）关闭通过设置-f通配符：我需要在别的地方

1) Turn off globbing via set -f: I need it somewhere else

2）在逃亡文件的文件名：BASH抱怨找不到文件管道进入标准输入时

2) Escape the file names in files: BASH complains about "file not found" when piping into stdin

THX任何建议。

的编辑：唯一的答案缺少的是如何从包含用于通配符时，文件名是在shell变量$文件，E特殊字符名称的文件读取。 G。命令1＆LT; $文件。的

推荐答案

作为一种替代之间切换设置-f 和设置+ F 你可以或许只是申请一个设置-f 来一个子shell，因为父shell的环境不会受到受此可言：

As an alternative to switching between set -f and set +f you could perhaps just apply a single set -f to a subshell since the environment of the parent shell would not by affected by this at all:

(
set -f
for file in $(cat files); do
   command1 < "$file"
   echo "$file"
done
)


# or even

sh -f -c '
   for file in $(cat files); do
      command1 < "$file"
      echo "$file"
   done
'

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