Perl does not remove line breaks. 

ccn@asus:perl -le 'print $ARGV[0]' '123
> 456
> 789'
123
456
789
ccn@asus:~$

May be your shell strips them?

In reply to Re: How to keep the line breaks in the arguments when I invoke Perl? by ccn
in thread How to keep the line breaks in the arguments when I invoke Perl? by henrycui

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