using sed to append text to the end of each line


 
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# 8  
Old 07-25-2006
if think the poster is asking for something along the lines of:

Code:
awk 'awk 'NR == 1 { fields = NF} { printf "%s", $0 ; for ( i = NF +1; i <=fields ) { printf " \t"}; printf "\n"}' file > newfile

# 9  
Old 07-26-2006
Thank you for the message..

The rows are of varying length. I want to append tabs at the end of each row by specifying the number of fields.

Let us say the number of fields are 50.
If row 1 has 10 values, I would like to append 40 tabs at the end.
If row 2 has 2 values, I would like to append 48 tabs at the end.
If row 3 has 50 values, no tabs should be appended.

I have a file which has 40 million rows. Is this a fast way to append delimiters? Can we make the script generic so that if we can pass a parameter like "tab" or "pipe" or "comma", it would append that delimiter...
 
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