you (probably) might want to use some idomatic perl,
its called 'slurp mode'.
It means being able to take in (slurp) the whole file
in one go, this is possible by temporarily 'undef'ining
the File Seperator $\.
open(FILE1, $ARGV[0]) || die "Error: $!\n";
{
local $/; #value is restored at end this block
undef $/; #'slurp mode'
@lines = <FILE1>; #slurp all lines
}
#$/ is as back 'to normal', so nothing unexpected happens later
local is 'sometimes' the 'right' way.
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