how to change file name

peter333

Hi, every one,
last week, I got an interview, an question I don't know how to answer :
In a unix directory you have 250 files all beginning with Test. You need to change the first letter of every file to be in small letters, ie test. What would you do? Provide a code sample if you claim to use code.
I tried many times. But it doesn't work. So, please give me an idea.

Thanks

[ 本帖最后由 peter333 于 2007-2-4 10:17 編輯 ]

aib

try it

1. 
   
2. 
   
3. ls | grep '^Test' | sed 's/^T/t/g'
   
4. 
   

復(fù)制代碼

peter333

thank you very much.  but it just goes to display. I did this, the same story:
ls|tr 't' 'T'

how can change these files's name?
thanks

aib

oo

1. 
   
2. [fred@centos test]$ for i in `ls | grep '^Test'`;do mv $i `ls $i | sed 's/^T/t/
   
3. g'`;done
   

復(fù)制代碼

peter333

原帖由 aib 于 2007-2-4 10:23 發(fā)表于 4樓  
oo


$ for i in `ls | grep '^Test'`;do mv $i `ls $i | sed 's/^T/t/
g'`;done

Perfect. Thanks a lot.