如何搜索和替换特定的行号字符串 [英] How to search and replace the specific line number string

问题描述

line_index="2d";

file="./Desktop/books.sh";

sed -i.bak -e $line_index $file

将删除 $line_index 指向的整行

Will delete the entire line that $line_index is pointing to

sed -i "s/harry/potter/g" $file

将搜索哈利并替换为波特

will search for harry and replace with potter

无论如何我可以将这两个语句结合起来，这样它只会替换harry的特定行号而不是文件中的所有harry.

Is there anyway that i can combine both statement so it will only replace the specific line number of harry instead of all the harry in the file.

推荐答案

当然，地址"和命令"可以自由组合:

Sure, "addresses" and "commands" can be freely combined:

sed '2s/harry/potter/g'

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