linux系统中批量对一类文件重命名

1、rename命令

[root@centos79 test]# ls
a.mp4  dup1.mp4  dup2.mp4  dup4.mp4
[root@centos79 test]# rename mp4 txt *.mp4
[root@centos79 test]# ls
a.txt  dup1.txt  dup2.txt  dup4.txt

2、利用循环语句

[root@centos79 test]# ls
a.txt  dup1.txt  dup2.txt  dup4.txt
[root@centos79 test]# n=1; for file in *.txt; do num=$(printf "%02d" $n); mv $file new$num.mp3; let n=n+1;done
[root@centos79 test]# ls
new01.mp3  new02.mp3  new03.mp3  new04.mp3

3、实现按照文件大小递增命名

[root@centos79 test]# ls
a.txt  b.txt  c.txt  d.txt
[root@centos79 test]# ll -h
total 170M
-rw-r--r--. 1 root root 50M Jul  6 19:21 a.txt
-rw-r--r--. 1 root root 10M Jul  6 19:21 b.txt
-rw-r--r--. 1 root root 80M Jul  6 19:21 c.txt
-rw-r--r--. 1 root root 30M Jul  6 19:21 d.txt
[root@centos79 test]# a=$(ls -S | xargs du -sh | tac | cut -f 2)
[root@centos79 test]# echo $a
b.txt d.txt a.txt c.txt
[root@centos79 test]# n=1; for file in $a; do num=$(printf "%02d" $n); mv $file $num.txt; let n=n+1; done
[root@centos79 test]# ls
01.txt  02.txt  03.txt  04.txt
[root@centos79 test]# ll -h
total 170M
-rw-r--r--. 1 root root 10M Jul  6 19:21 01.txt
-rw-r--r--. 1 root root 30M Jul  6 19:21 02.txt
-rw-r--r--. 1 root root 50M Jul  6 19:21 03.txt
-rw-r--r--. 1 root root 80M Jul  6 19:21 04.txt