rename all the files in a folder..

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# 1  
Old 08-31-2009
rename all the files in a folder..

Hi Guys,

I have 5000 files in a folder. all are .DAT files.
I want to rename them as .TXT files.
I tried the following command.

mv *.DAT *. TXT

But it is throwing an error. Can you please tell me what am i doing wrong.

Thanks & Regards,
# 2  
Old 08-31-2009
mv *.DAT *. TXT

Remove the space b/w *. and TXT
# 3  
Old 08-31-2009
for i in *.DAT
    mv "$i" "${i%.DAT}.TXT;

# 4  
Old 08-31-2009
the space was typo error... Actually i tried without space only..

Can't we run a single command, do we have to use a for loop.. just to understand the mv command.. is it designed to rename or move only single file at a time?

Thanks for your help guys,,
# 5  
Old 08-31-2009
Its more about knowing how '*' works, rather than mv command

if ur directory contains two .DAT files, F1.DAT and F2.DAT, and one TXT file, F.txt

actual command getting fired will be
mv F1.DAT F2.DAT F.txt

and now think if above command makes sense to you.
# 6  
Old 08-31-2009
correct sharad,
But i tired the same command from the command prompt.. it worked fine...
(Ofcourse not the mv command, but ren command)

ren *.DAT *.txt

Is there any substitution for that above command in unix....
# 7  
Old 08-31-2009
DOS command ?
I could not find ren on my system, tried to search and Google/wiki said its dos command
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