sed 命令替换字符串行

Question

我有一个像这样的文件，我需要用 sed 命令替换所有字符串行，例如，我想在“Branglebracken”上使用 sed 并替换为其他想要的文本，但我不想在什么时候替换它这个词包含在其他字符串中。我的意思是我只需要在单词单独时替换它，而不是当它包含在其他文本中时。所以基本上它必须以它开始和结束......

I came here to Branglebracken with my wife and child, as well as an Altmer herbalist who wanted to explore the forest.\n\nCould you check on them? Since they're not back already, I assume they've taken a rest at the wayshrine to the northwest.
Branglebracken
Branglebracken
Branglebracken
[intentionally repeated]

输出是这样的

I came here to Branglebracken with my wife and child, as well as an Altmer herbalist who wanted to explore the forest.\n\nCould you check on them? Since they're not back already, I assume they've taken a rest at the wayshrine to the northwest.
word-replaced
word-replaced
word-replaced
[intentionally repeated]

如您所见，文本必须仍然包含“Branglebracken”一词

Answer 1

您可以使用锚点将您的匹配限制为仅一行中的该搜索模式：

sed 's/^Branglebracken$/word-replaced/' file

^ 和 $ 将确保您只匹配一行中的 Branglebracken。