awk Array Statistics

Awk is powerful in the processing of scripts, and now lists the most commonly used parameters of awk

1. For example, there is a log that needs to count the number of IP accesses

   
   650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/71/81/wKioL1XS1FXT9BGfAAjOpySZ5Zw238.jpg "title=" "alt = "Wkiol1xs1fxt9bgfaajopysz5zw238.jpg"/>awk ' {count[$1]++} end{for (i in count) print I, Count[i]} ' 1.txt

   Results:

   650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/71/85/wKiom1XS1AKSZMgiAAH3SrJd0tA269.jpg "title=" "alt = "Wkiom1xs1akszmgiaah3srjd0ta269.jpg"/> If there's anything else you want to order.

awk Array Statistics