Re: concatenating text files before reading

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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Re^2: concatenating text files before reading by Hossein (Acolyte) on Sep 05, 2013 at 09:19 UTC
Thank you :) this was what I was looking for. regards Hossein	[reply]
Re^3: concatenating text files before reading by Anonymous Monk on Sep 05, 2013 at 09:29 UTC
Not really, too many caveats Write to existing file with character insert, Dangerous diamonds! safe diamonds FMTYEWTK About Mass Edits In Perl - Perl.com Good-bye Unix filter idiom	[reply]
Re^4: concatenating text files before reading by Eily (Monsignor) on Sep 05, 2013 at 13:11 UTC
The `while (<>)` can be tricky when used with initial @ARGV (script parameters), but in this case, as @ARGV is the result of a glob, most of these problems are avoided. There is however something you should check: that @ARGV is not empty after the glob operation, or `<>` will read in the standard input. localising the change to @ARGV could avoid some trouble as well. There's also taint mode to play it more secure.	[reply] [d/l] [select]