Linux shell awk例子

awk '{print $1}' *.txt | sort -g | uniq -c

拆解为:
1 逐行读取
awk '{print $1}' *.txt
2 逐行读取&按照数字大小排序
awk '{print $1}' *.txt | sort -g
3 逐行读取&按照数字大小排序&统计数量
数量在前,类目在后

 

refer:

https://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858470.html

https://www.runoob.com/linux/linux-comm-awk.html