使用grep命令匹配特定字符串后打印行

Question

我想在匹配字符串后打印整行

例如，我有以下输入：

  www.google.com/images
  www.google.com/images/12
  www.yahoo.com/images/12
  www.bing.com/images/34
  www.google.com/images/12
  www.google.com/images/imagescols

我想要这个输出：

 com/images              
 com/images/12           
 com/images/12           
 com/images/34           
 com/images/12           
 com/images/imagescols   

请建议在UNIX中使用grep命令执行此操作的方法。

Answer 1

您可以尝试以下cut命令。

cut -d. -f3 file

要么

awk -F. '{print $NF}' file

要么

grep -oE '[^.]*$' file

例：

$ cut -d. -f3 file
com/images
com/images/12
com/images/12
com/images/34
com/images/12
com/images/imagescols