查找并从里面bash命令文本文件替换 [英] Find and Replace Inside a Text File from a Bash Command

问题描述

什么是做一个查找和替换为给定的输入字符串最简单的方法，说 ABC ，并用另一个字符串替换，比如 XYZ 文件 /tmp/file.txt ？

What's the simplest way to do a find and replace for a given input string, say abc, and replace with another string, say XYZ in file /tmp/file.txt?

我书面方式一个应用程序，并使用IronPython的通过SSH＆MDASH执行命令;但我不知道Unix的那么好，不知道要寻找什么。

I am writting an app and using IronPython to execute commands through SSH — but I don't know Unix that well and don't know what to look for.

我听说猛砸，除了是一个命令行界面，可以是一个非常强大的脚本语言。所以，如果这是真的，我认为你可以像这样执行的操作。

I have heard that Bash, apart from being a command line interface, can be a very powerful scripting language. So, if this is true, I assume you can perform actions like these.

我可以使用bash做，什么是最简单的（一行）脚本来实现我的目标？

Can I do it with bash, and what's the simplest (one line) script to achieve my goal?

推荐答案

文件操作通常不会做被Bash，而是由猛砸调用程序，例如：

File manipulation isn't normally done by Bash, but by programs invoked by Bash, e.g.:

> perl -pi -e 's/abc/XYZ/g' /tmp/file.txt

的 -i 标志告诉它做就地更换。

The -i flag tells it to do an in-place replacement.

请参阅男人perlrun 有关详细信息，包括如何采取原始文件的备份。

See man perlrun for more details, including how to take a backup of the original file.

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