Do not slurp in a file into an array. Someday that input file will be huge.

I second that, and here is my 2-cent solution: 

perl -wnl -e 'print $_ unless /^$/' infile >outfile

[download]

see also: 

perldoc perlrun
perldoc perlre

[download]
-- 
Joost       downtime n. The period during which a system
            is error-free and immune from user input.

[download]

In reply to Re: Re: remove blank lines with regex by Joost
in thread remove blank lines with regex by amarceluk

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