您可以做一个单一的电话更换为 SED ：

You can do the replacement with a single call to sed:

sed -i -E 's/([#$%&_\])/\\&/g' file.txt

的＆安培; 在替换文本填写的任何单个字符用括号括起来。请注意，由于 \\ 是LaTeX的转义字符，你必须逃脱它，以及在原始文件。

The & in the replacement text fills in for whichever single character is enclosed in parentheses. Note that since \ is the LaTeX escape character, you'll have to escape it as well in the original file.