帮忙看一个脚本有什么问题

qinhu

[PHP]
[user@localhost tmp]$ cat ttt.sh
#! /bin/bash
DIR="/dir1/dir2/dir3/[file].txt"
SUBDIR=${DIR##*/}
PARDIR=${DIR%%/$SUBDIR}
echo ${PARDIR}/$SUBDIR
[user@localhost tmp]$ sh ttt.sh
/dir1/dir2/dir3/[file].txt/[file].txt

[/PHP]

里面[file].txt怎么出现两次呢？怎样才能使它只出现一次？

多谢

huan

1. 
   
2. [No.539 01:11:02 tmp]$ ./ttt.sh
   
3. [file].txt
   
4. /dir1/dir2/dir3
   
5. /dir1/dir2/dir3/[file].txt
   
6. [No.540 01:11:04 tmp]$ cat ./ttt.sh
   
7. #! /bin/bash
   
8. DIR='/dir1/dir2/dir3/[file].txt'
   
9. #DIR="/1/2/3/TXT"
   
10. SUBDIR=${DIR##*/}
    
11. PARDIR=${DIR%/*}
    
12. 
    
13. echo $SUBDIR
    
14. echo $PARDIR
    
15. echo ${PARDIR}/$SUBDIR
    
16. [No.541 01:11:07 tmp]$
    

复制代码

yongjian

OR

1. PARDIR=$(dirname $DIR)

复制代码