awk - 使用 gsub 用两个双引号替换双引号？

Question

我正在尝试在 awk 中编写一个脚本(除其他外)用两个连续的双引号替换所有双引号实例。但出于某种原因，我似乎无法正确地转义我的双引号。

所以例如:

Mary had a "little" lamb

会变成

Mary had a ""little"" lamb

好心谢谢!

Answer 1

你可以这样做:

echo 'Mary had a "little" lamb' | awk '{ gsub(/"/, "&&") } 1' 

输出:

Mary had a ""little"" lamb

1最后调用 awk 的默认块 { print $0 } .

使用 sed 甚至更短:

echo 'Mary had a "little" lamb' | sed 's/"/&&/g'