Rename multiple file from file listing

Shell Programming and Scripting
1

I am new at Linux/UNIX programming. Here is my problem.
I had one big file which I split using the command

csplit -k -s -f april.split. april '/^ISA/' '{10000}'

So now I have multiple files with names

april.split.01
april.split.02
april.split.03

But I need the name of the file like

CHRY.850.01
CHRY.850.02
CHRY.850.03

etc.
Can I use following commands on the prompt or do I have to write a script.

for each in `cat april-850-split`
do
cp $each ${each}.850

Thanks

2

Yes, you can run this type of stuff from the command line.

You'll get a secondary prompt and it's smart enough to know
you're done when it sees the "done" command.

Preferred, however, is this:

cat april-850-split |
while read each ; do

cp $each $each.850

done

... because then you'll never get the "arglist too long" error.

BTW -- don't think this renaming will give you exactly what you wanted....

don't you need:

number=${each##*.}
mv $each CHRY.850.$number

But again, I prefer doing things like this:

cat april-850-split |
while read each ; do

  number=${each##*.}
  echo mv $each CHRY.850.$number

done |
  tee commands.sh

This'll save my intended "mv" ( rename ) commands in a script file named commands.sh

Then I can visually inspect it --- make sure it's going to do what I want... then run it,
saving all the output to an "err" file:

ksh -xvf commands.sh 2>&1 | tee err
3

Thanks for your reply. You are correct. I do need CHRY.850.01 etc. When I ran you code, I am getting

mv april.split.03 CHRY.850.
mv april.split.04 CHRY.850.
mv april.split.05 CHRY.850.

without the number.

Here is my code.

$ cat april-850-list | while read each; do number=${each##*.} echo mv $each CHRY.850.$number done | tee repl.sh;

Can you please tell me what is wrong with my code? I ma running on Linux. I don't think that would make a difference.

Thanks

4

You need to show the contents of the april-850-list file.

What SHELL on Linux?
I'm on Solaris...

We may have to try something like:

number=` echo $each | awk -F. '{print $NF }'`

5

There is no difference between a script entered on the command line and a script in a file. (Apart from the occasional quoting issue.)

for file in april.split.*
do
  mv "$file" "CHRY.850.${file##*.}"
done
6

Thank you. It worked.