Q:

Use of Grep command using regular expression

  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x100
  Delay: 10x10

Above is the  data of my txt file how can i get records after Delay:  and before x100.please tell me the exact syntax?

A:

awk -F"[:x]” '$NF==100{ print $2 }' txt.file

