Question

假设我们有这句话：

输入：

This is some string (234) and so on

输出：

This is some string (page 234) and so on

问题是如何在找到数字时添加“页面”，数字带括号。

Answer 1

您可以使用以下sed：

sed 's/(\([[:space:]]*[[:digit:]]\+[[:space:]]*\))/(page \1)/g' file

$ cat file
This (is) some string (234) and so on
(This is some string ( 1324) and so on
This is some string (text) and so on

$ sed 's/(\([[:space:]]*[[:digit:]]\+[[:space:]]*\))/(page \1)/g' file
This (is) some string (page 234) and so on
(This is some string (page  1324) and so on
This is some string (text) and so on

Answer 2

这可以通过很多方式解决，并且非常简单，您应该使用谷歌找到至少一个解决方案。这里有一些非常简单。

sed 's/(/(page /g' file
This is some string (page 234) and so on

要测试数字，你可以这样做：

awk -F"[()]" '{for (i=1;i<=NF;i++) {if ($(i%2)~"^[0-9]+$") $i="page "$i;printf "%s%s%s",(i%2==1 && i!=1?")":""),$i,(i%2 && i!=NF?"(":"")}print ""}' file
This is some string (page 234) and so on

以下是基于jaypals正则表达式的gnu awk。

awk '{print gensub(/\(([[:space:]]*[[:digit:]]+[[:space:]]*)\)/,"(page \\1)","")}' file
This is some string (page 234) and so on (not this)45(nor this) more

sed在括号中添加只存在数字的字符串

2 个答案: