The diamond operator has a bit of magic that could help. When used with an empty filehandle, it will read lines from all files in @ARGV. So you just have to put your input file list in @ARGV, and read it all with a while loop. And glob is your friend too. 

local @ARGV = glob "folder/*.txt; # list of all .txt files in folder
print while (<>); # print each line of all those files

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In reply to Re: concatenating text files before reading by Eily
in thread concatenating text files before reading by Hossein

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