1-将须要批改的文件拖到同一个文件夹

2-关上终端输出

for i in *.avi; do mv "$i" "${i%.avi}.mp4"; done

相对路径写法

for i in ../6-php/*.avi; do mv "$i" "${i%.avi}.mp4"; done

绝对路径写法

 for i in  /Users/xuxiansheng/Desktop/06.\ 基于PHP7+MVC博客零碎设计/7-面向对象_1/*.avi; do mv "$i" "${i%.avi}.mp4"; done

批改前:

批改后:

.mp4前有.avi批改成.mp4写法:

(for i in *.avi.mp4; do mv "$i" "${i%.avi.mp4}.mp4"; done)

例子:我当初要把aaaaaaaaaaaaa.jpg重命名为aaaaaaaaaaaaa_MED.jpg请应用如下命令:for i in *.jpg; do mv "$i" "${i%.jpg}_MED.jpg"; done同理aaaaaaaaaaaaa_MED.jpg重命名为aaaaaaaaaaaaa_LRG.jpg的办法:for i in *.jpg; do mv "$i" "${i%_MED.jpg}_LRG.jpg"; done