sed / awk command to print line number as column?

johnpaulodonnell · 01-22-2007, 07:44 AM

Hi.

I have a data file containing say 10 columns. I'd like to add a column in the first column position to act as a label - just a column of line numbers. Does anyone know a simple sed / awk command to do this?

Thanks

zulfilee · 01-22-2007, 07:51 AM

$ awk '{print NR,$0}' <filename>

This will print the line number along with each field

A easier command will be

$ nl filename

[Or do u want the column numbers on top ? ]

- zulfi

johnpaulodonnell · 01-22-2007, 08:07 AM

That's perfect.

Thank you.