Question

我有一个像这样的文件

Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now

Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now


Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now


Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now



Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now

我想在“寻找一个小鸡”的第3h比赛后添加一条线等待

所以上面应该阅读。

Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now

Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now


Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
**wait** 
Do the best part now


Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now



Go to Vegas
Play the blackjack
Earn a  lucky wad
Find a hot chick
Do the best part now

每N个字符串匹配后插入另一行（在本例中为“等待”）
如何才能做到最好我可以在每个模式匹配后添加一个新行但是我希望在每个第N个模式匹配后添加一个特定的行喜欢这个

sed '/"Find a hot chick"/ a\
    wait ' <filename>

Answer 1

像这样：

awk '1;/Find a hot chick/{if(i++==3){print "New line";i=0}}' yourfile

对于每一行，“1”只执行awk的默认操作，即打印。

Answer 2

使用awk，您可以：

#!/usr/bin/awk -f
BEGIN {
  counter = 0
}

{
  if ( $0 == "Find a hot chick" )
    counter++
  print
  if ( counter == 3 ){
    print "**wait**"
    counter = 0
  }
}

将其放入文件中，例如file.awk，然后：./file.awk your_file

Answer 3

使用sed

sed  '/Find a hot chick/{x;s/^/./;/.\{3\}/{s/.\{3\}//;x;s/.*/&\n**wait**/;b};x}' file

说明:(它被称为“点数”）

/Find a hot chick/ {           # find the key words
    x                          # Exchange the contents of the hold and pattern spaces.
    s/^/./                     # add one dot in hold space. (such as ..$, ...$ etc)
    /.\{3\}/ {                 # check if there are 3 dots in hold space or not.
        s/.\{3\}//             # find the third pattern match, clean the dots in hold space.
        x                      # Exchange the contents of the hold and pattern spaces.
        s/.*/&\n**wait**/      # add the contents OP asked.
        b                      # b label, Unconditionally branch to label. The label may be omitted, in which case the next cycle is started. 
    }
    x                          # Exchange the contents of the hold and pattern spaces.
}

如果需要通过awk完成，这里的awk命令更直接。

awk '/Find a hot chick/{k++;if (!(k%3)){$0=$0 RS "**wait**"}}1' file

Answer 4

grebnekes awk版

的一小部分

awk '/Find a hot chick/ && !(++i%3) {$0=$0"\n**wait**"}1' file

这将为每行第三次模式添加一个新行，然后打印所有。

在每第N个模式匹配后添加一个特定的行.AWK SED你得到的任何东西

4 个答案: