Linux 批量大小写/后缀转换

大写转小写： 

for fname in *; do mv $fname `echo $fname|tr [A-Z] [a-z]`; done

 

小写转大写：

[zengs@SYS SOS]$ for cpplive in *; do mv $cpplive `echo $cpplive|tr [a-z] [A-Z]`; done

 

大写转小写：

[zengs@SYS SOS]$ for cpplive in *; do mv $cpplive `echo $cpplive|tr [A-Z] [a-z]`; done

 

修改后缀：

[zengs@SYS SOS]$ for cpplive  in *.JPG; do mv $cpplive  ${cpplive%%\.*}.jpg; done

 

 

Ref:

https://blog.csdn.net/fenglvming/article/details/19714741

https://www.cnblogs.com/jluzhsai/p/3466749.html