in reply to Replace first blank line in a text file with headers.

If you find that the only place your text file could possibly have an empty line and you don't mind changing the file in place, feel free to use this one-liner (where filename.txt is the name of your text file):

perl -i.tmp -lpe "s/^\s*$/Name,City,State,Zip/g" filename.txt

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Cheers,
Shadowsong

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Re^2: Replace first blank line in a text file with headers.
by FreeBeerReekingMonk (Deacon) on Mar 24, 2016 at 17:49 UTC
    You can always change it ONLY on the first line, with linenumber $.

    perl -pi -le 's/^\s*$/Name, City, State, Zip/ if $.==1' filename.txt

    edit: Sorry, forgot the -l (without it, the line is replace-inserted without newline, and the next line with data does not start at the beginning of the next line)

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