批量更新Linux文件后缀名

#!/bin/bash
#Create_Time 2019-08-06
#use: small_wei
#查找并,批量修改文件后缀
#后缀为 .txt 修改为 .log


find /opt -name "*.txt" | awk -F ".txt" '{print $1}' | while read i
do
mv ${i}.txt ${i}.log
done