替换 sed 中的控制字符 [英] Replacing Control Character in sed

问题描述

我需要在 linux 中的文本文件中替换所有出现的控制字符 CTRL+A (SOH/ascii 1)，这在 SED 中如何实现?

I need to replace all occurrences of the control character CTRL+A (SOH/ascii 1) in a text file in linux, how can this be achieved in SED?

推荐答案

这可以通过 cat 和 -v(相当于 --show-非打印 选项并将其传送到 sed 中).

This can be done through cat with the -v (equivalently --show-nonprinting options and piping this into sed).

如果控制字符是标题的开始(SOH)字符(CTRL+A/ASCII 1)，而我们想用制表符替换它，我们将执行以下操作:

If the control character the start of heading (SOH) character (CTRL+A / ASCII 1), and we want to replace it with a tab, we would do the following:

cat -v file | sed 's/^A/	/g' > out

cat -v 会将 SOH 字符替换为 ^A，然后在 sed 中匹配和替换.

cat -v would replace the SOH character with ^A, which would then be matched and replaced in sed.

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