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rename files using loop with different name

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Operating Systems Linux rename files using loop with different name
# 1  
Old 06-25-2010
rename files using loop with different name
Hi,


i need to write a shell script where i have to loop through all the file in a directory and rename them based on below condition.
Code:
file1.dat
file2.dat
file3.dat

the above files has to be moved to another directory like below
Code:
file1_201001.dat
file2_201002.dat
file3_201003.dat

can you please help me

Moderator's Comments:
Mod Comment Use code tags please, ty.
Last edited by zaxxon; 06-25-2010 at 08:37 AM.. Reason: code tags
# 2  
Old 06-25-2010
Are there more than 100 or even 1000 files?
What if the renamed file has a name like file100.dat, what would be the name of the copied file? file100_201100.dat or file100_2010100?
And what if the renamed file has a name like file1000.dat, what would be the name of the copied file? file1000_201000.dat or file1000_20101000.dat?

---------- Post updated at 13:45 ---------- Previous update was at 13:39 ----------

Do the existing files already have an extension? Do you want to keep it or remove it?
# 3  
Old 06-25-2010
Code:
$> ll
total 12
drwxr-xr-x 3 root root 4096 25. Jun 14:00 .
drwxr-x--- 4 isau isau 4096 25. Jun 13:37 ..
-rw-r--r-- 1 root root    0 25. Jun 14:00 file1.dat
-rw-r--r-- 1 root root    0 25. Jun 14:00 file2.dat
-rw-r--r-- 1 root root    0 25. Jun 14:00 file3.dat
drwxr-xr-x 2 root root 4096 25. Jun 14:00 newdir
$> Y=`date +%Y`; D=0; for FILE in file*.dat; do D=`printf "%02d\n" $((D+1))`; mv $FILE newdir/`echo $FILE| sed 's/\./_'${Y}${D}'./'`; done
$> ll newdir
total 8
drwxr-xr-x 2 root root 4096 25. Jun 13:58 .
drwxr-xr-x 3 root root 4096 25. Jun 13:58 ..
-rw-r--r-- 1 root root    0 25. Jun 13:58 file1_201001.dat
-rw-r--r-- 1 root root    0 25. Jun 13:58 file2_201002.dat
-rw-r--r-- 1 root root    0 25. Jun 13:58 file3_201003.dat

Suitable up to file99.dat - the printf adds a missing 0 in front of a single digit. Else you might want to increase 02d to whatever number number of digits you encounter.
# 4  
Old 06-28-2010
Hi,

there are 3 folders eg. IN, PRC & OUT.

files (.dat) will be copied to IN folder every 15 minutes (number of files may be 50 -100).

i have to write a shell script, that will move all the files from IN folder to PRC folder and then all the files will be executed (through SQL LDR) on by one and moved to OUT folder.


when files are moved from IN folder to PRC folder it should be moved with different name to PRC folder.


thanks
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