How to add line numbers to a text file?

[Robert L. Howard]

In <15248:Nov3018:01:4490 at kramden.acf.nyu.edu> brnstnd at kramden.acf.nyu.edu (Dan Bernstein) writes:

>In article <6826 at uceng.UC.EDU> dmocsny at minerva.che.uc.edu (Daniel Mocsny) writes:
>> My question to all of you, however, is this: faced with the need to
>> number a text file from a shell script, how would you do it? I'm
>> kind of curious to see the variety of approaches possible. Would you
>> use C, awk, perl, sed, sh, cat, echo, expr, and/or dd?

>grep -n .*

Huh?  This is not even a complete answer....

Try:

cat -n <infile >outfile

(It's got to be faster than grep too)

Robert
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