Thanks, no I just gave an example of serial numbers, but the numbers can be any random numbers and the numbers are relevant. example: Input: 
 
    a,       b,    c,   d, 
aa,  
bb,  
aa,  
bb,  
12,33,102,111,223,24,88,56,99,130,21,45,88,90,212,500

[download]
Desired output: 
 
    a,       b,    c,   d, 
aa,  12,      33,   102, 111, 
bb,  223,     24,    88,  56,
aa,  99,      130,   21,  45,
bb,  88,      90,     212,  500,

[download]

In reply to Re^4: Cutting text from the end of the file and adding it to the top by oysterperl
in thread Cutting text from the end of the file and adding it to the top by oysterperl

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