Linux shell实现批量修改文件后缀名

batch_modify.sh

#!/bin/bash
#Description:ShellName.sh txt log(将txt后缀的文件修改为log)

for i in $(ls *.$1)
do
  mv $i ${i%.*}.$2
  #${string%substring}指从$string的结尾位置截掉最短匹配的$substring
done

验证

[root@elasticsearch ~]# ls *.txt
1.txt  2.txt  3.txt
[root@elasticsearch ~]# sh batch_modify.sh txt log
[root@elasticsearch ~]# ls *.log
1.log  2.log  3.log
[root@elasticsearch ~]#