renaming the default output name of the split command

Shell Programming and Scripting
1

Hello,

I would like to split a file but I dont what the subfiles to be named the way they are:

 
ex:
default name: xaa xab xac xad xae
desired name: b01 b02 b03 b04 b05

I know I can rename them afterwards however I have a varialbe split lenghth, in other words I am not sure how many subfiles I will have.
That is up to the user of the script.

I am using an if statement for renaming these but it makes my script really long and I can never catch all the possibilites since there are infinit number of subfiles the user might want.

This is what I am doing (not very smart):

 
If ( `echo $NumofSub` == 2 ) then
  mv xaa b01.txt
  mv xab b02.txt
else if ( ..... so forth

I hope I am clear enough, but if not please let me know if you have any
questions. I am using tcsh by the way I know I shouldnt but my whole script is in tcsh, cant change it now.

Have learnd my lesson and will most likely use bash for my next script.

---------- Post updated 11-13-11 at 01:02 AM ---------- Previous update was 11-12-11 at 11:52 PM ----------

if any one is interested, I wrote this which works :).

 
#!/bin/tcsh
#batch rename
 
split -l 40 260_sites.txt
@ bnum = 1
foreach batch ( `ls | grep xa` )
 mv $batch b0"$bnum".txt
 @ bnum = $bnum + 1
end
2

Using bash.

ls x[a-z][a-z] | while read file;do let c++;echo mv $file b$(printf "%02d" $c)".txt";done
mv xaa b01.txt
mv xab b02.txt
mv xac b03.txt
mv xad b04.txt
mv xae b05.txt

When you are safe , just remove the echo

3

Try this:

~/unix.com$ split -d -a 3 -l 240 file b

-d adds digit prefixes instead of alphabetic
-a 3 allows you to add more digits to output files.
b is the prefix to use
In this example: output will be b000...b999