How to use regular expression to determine if one file concluding ISBN series? on linux/unix.
And how about using Perl?
Thanks
How to use regular expression to determine if one file concluding ISBN series? on
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How to use regular expression to determine if one file concluding ISBN series? on linux/unix.
And how about using Perl?
Thanks
There isn’t an easy regular expression for ISBNs, as hyphenation is variable (see the hyphenation instructions). What you could do is strip out all hyphens or spaces from your string, then check to see if it’s 10 or 13 digits long (or 9 digits ending with either an
xor anX). However, this doesn’t handle verification of the ISBN, as the last digit (or letter, if it’s an[xX]) is a checksum that verifies the ISBN is valid.If you’re using Perl, what you want to do is use the
Business::ISBNmodule, which saves you all of this trouble.