I want to read from STDIN and have everything in a variable, how can I do this?
I'm know know almost nothing about Perl, and needed to create CGI script to read data from POST request, and was not able to find anything how to do that.
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3Presuming that you know how to assign to variables and read STDIN, I imagine you're having some other unspecified problem. Are you trying to read to EOF (list context)? Are you reading from a pipe that does not close? Are you reading from a Terminal?tjd– tjd2015-12-22 18:13:12 +00:00Commented Dec 22, 2015 at 18:13
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Related: stackoverflow.com/questions/953707/…user202729– user2027292018-10-30 16:34:53 +00:00Commented Oct 30, 2018 at 16:34
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2 Answers
This is probably not the most definitive way:
my $stdin = join("", <STDIN>);
Or you can enable slurp mode and get the whole file in one go:
local $/;
my $stdin = <STDIN>;
[but see man perlvar for caveats about making global changes to special variables]
If instead of a scalar you want an array with one element per line:
my @stdin = <STDIN>;
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my $var = do { local $/; <> };
This doesn't quite read Stdin, it also allows files to specify on the command line for processing (like sed or grep).
This does include line feeds.
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