Read file to one string and separate it in perl -

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so have file looks like:

name, surname, number name2, surname2, number2 name3, surname3, number3

i want read 1 string in perl, , want like:

"name, surname, number, name2, surname2, number2, name3, surname3, number3"

but don't have idea how :/ i'm new in perl. know only, open file need do:

open($list, "<", $file) 

my $list = {     use autodie;     open $fh, '<', $file;     chomp(my @lines = <$fh>);     join ', ', @lines; };

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