regex - 替换 UNIX SED 中的文本

Question

我有 text1.txt 包含

<this can be anything, any number of line - no hardcoded>
<this can be anything, any number of line - no hardcoded>
     param1=<this can be any value - no hardcoded>
<this can be anything, any number of line - no hardcoded>
<this can be anything, any number of line - no hardcoded>

我想替换这部分，这可以是任何值 - 没有用abc硬编码

什么应该是正确的 SED 命令？请注意，由于环境限制，我无法灵活使用任何语言，例如 perl、python 或 ruby​​ ~ 并且只能使用 Unix 命令。并且除了param1没有硬编码

提前非常感谢！

Answer 1

你想要的调用是

sed -e 's/param1=.*/param1=abc/' text1.txt

Answer 2

听起来你想要这样的东西s/<.\+>$/<abc>/：

$ cat test1.txt

<this can be anything, any number of line - no hardcoded>
<this can be anything, any number of line - no hardcoded>
     param1=<this can be any value - no hardcoded>
<this can be anything, any number of line - no hardcoded>
<this can be anything, any number of line - no hardcoded>

$ sed 's/<.\+>$/<abc>/' test1.txt

<abc>
<abc>
     param1=<abc>
<abc>
<abc>