David Christensen <dpchr...@holgerdanske.com> writes: > On 06/11/13 21:44, lee wrote: >> ... what I don't understand is what >> the most efficient way would be to create a sha-2 sum for a file. > > Have you considered Digest? > > http://perldoc.perl.org/Digest.html
Yes, I've been looking at descriptions like that and I don't know perl well enough to understand them. I wanted to learn perl for ages and never got around to it. Now I'm finding it extremely useful, and I'm learning it the wrong way by not starting at the beginning ... I've come up with this for a test: #!/bin/perl use strict; use warnings; use Digest::SHA our $fh; $ctx = Digest->new(SHA-256 => $arg); open $fh, "testfile"; $ctx->addfile( $fh); print "hash: " . $ctx->b64digest . "\n"; ... and that says: ,---- | "" is not exported by the Digest::SHA module | Can't continue after import errors at sha.pl line 8. | BEGIN failed--compilation aborted at sha.pl line 8. `---- As you can see, I don't don't know what I'm doing here. "$ctx = Digest->new(SHA-256 => $arg);" is probably not right, but I don't know what I'm supposed to put for $arg. The error message doesn't make any sense to me, either, line 8 is "our $fh;". This is why I was looking for an example so I can see how these things are being used. -- "Object-oriented programming languages aren't completely convinced that you should be allowed to do anything with functions." http://www.joelonsoftware.com/items/2006/08/01.html -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
