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Need script to move files based on name

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Top Forums Shell Programming and Scripting Need script to move files based on name
# 1  
Old 10-22-2010
Need script to move files based on name
Hi folks,

I'm new here and appreciate greatly any help.

I have a bunch of files that need be moved and renamed. Fortunately, they are all in sequence...

Present filename and path: /.catalog1/t76038_842-01
Move to: /.catalog1/76038-01

So, we need to drop the "t" and "_842" and increment the "01"

The final file would be /.catalog1/76038_842-366 and will get moved to
/.catalog1/76038-366

Currently we do this manually and it is monotonous! I am using bash.

Thank you so much!

Brian
# 2  
Old 10-22-2010
This code assume :
1) your shell support ${##|%%} expansion
2) all your initial file name have the same form tNNNNNN_NNNNN-NNNNN
the lower case letter t followed by any number of figures separated by a _ and a -

Code:
{ while read t ; do a=${t##*t} ; d=${t%/*} ; echo mv "$t $d/${a%%_*}-${t##*-}" ; done } <inputfile

run it and if ok remove the echo

Code:
[ctsgnb@shell ~]$ cat myt
/.catalog1/t76038_842-01
/.catalog1/t76038_842-366
/.catalog1/t76038_543-366
[ctsgnb@shell ~]$ { while read t ; do a=${t##*t} ; d=${t%/*} ; echo mv "$t $d/${a%%_*}-${t##*-}" ; done }<myt
mv /.catalog1/t76038_842-01 /.catalog1/76038-01
mv /.catalog1/t76038_842-366 /.catalog1/76038-366
mv /.catalog1/t76038_543-366 /.catalog1/76038-366
[ctsgnb@shell ~]$

Note that you might want to run it directly in /.catalog1 directory, then
Code:
cd /.catalog1
ls -1 t*_*-* | { while read t ; do a=${t##*t} ; echo mv "$t ${a%%_*}-${t##*-}" ; done }

This would give :

Code:
[ctsgnb@shell ~]$ ls -1 t*_*-* | { while read t ; do a=${t##*t} ; echo mv "$t ${a%%_*}-${t##*-}" ; done }
mv t76038_842-01 76038-01
mv t76038_842-366 76038-366
mv t76038_543-366 76038-366
[ctsgnb@shell ~]$

if your are happy with what is displayed just remove the echo and run it
Last edited by ctsgnb; 10-22-2010 at 07:52 PM..
# 3  
Old 10-22-2010
I appreciate the quick reply, but I'm a little confused...

I do not script at all so please excuse my ignorance. But where do we set the loop start and end point? ie. start at /.catalog1/t76038_842-05 and end at /.catalog1/t76038_842-366? Also, what is <inputfile? Not sure what we need there.

Thanks.
# 4  
Old 10-22-2010
go in your directory :

Code:
cd /.catalog1

Then list the file you want to rename and make sure that this list contains only the file you want to rename and that they fit the name t*_*-*

Code:
ls -1 t*_*-*

the -1 option is to display on 1 column
if the list is ok, you have 2 choices :

choice 1) you branch it directly to the script using a pipe | :
Code:
ls -1 t*_*-* | { while read t ; do a=${t##*t} ; echo mv "$t ${a%%_*}-${t##*-}" ; done }

choice 2) you redirect this list into a file :
Code:
ls -1 t*_*-* >inputfile

and then you give this file to feed the script
Code:
{ while read t ; do a=${t##*t} ; echo mv "$t ${a%%_*}-${t##*-}" ; done } <inputfile

Last edited by ctsgnb; 10-22-2010 at 08:15 PM..
This User Gave Thanks to ctsgnb For This Post:
axslinger
# 5  
Old 10-23-2010
Thanks alot. I will give that a try Monday. Very much appreciated!

Brian
# 6  
Old 10-23-2010
Another way:
Code:
ls t*|sed -e 'p;s/^t//;s/...\-//'|xargs -n2 mv

This User Gave Thanks to Klashxx For This Post:
ctsgnb
# 7  
Old 10-23-2010
Nice one Klashx !
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