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Top Forums Shell Programming and Scripting Regexp for string that might contain a given character Post 302848995 by Don Cragun on Friday 30th of August 2013 03:09:30 PM
Old 08-30-2013
The extended regular expression ^(1.|.)..$ seems to do what you want. But without knowing what utility you're using to evaluate the RE, I have no idea if it will do what you want.

Your thread title mentions regexp; your text mentions pattern. If you want a pathname matching pattern instead of a regular expression, you need something completely different.
 
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Test::Unit::Assertion::Regexp(3pm)			User Contributed Perl Documentation			Test::Unit::Assertion::Regexp(3pm)

NAME
Test::Unit::Assertion::Regexp - Assertion with regex matching SYNOPSIS
require Test::Unit::Assertion::Regexp; my $assert_re = Test::Unit::Assertion::Regexp->new(qr/a_pattern/); $assert_re->do_assertion('a_string'); This is rather more detail than the average user will need. Test::Unit::Assertion::Regexp objects are generated automagically by Test::Unit::Assert::assert when it is passed a regular expression as its first parameter. sub test_foo { ... $self->assert(qr/some_pattern/, $result); } If the assertion fails then the object throws an exception with details of the pattern and the string it failed to match against. Note that if you need to do a 'string does not match this pattern' type of assertion then you can do: $self->assert(qr/(?!some_pattern)/, $some_string) ie. Make use of the negative lookahead assertion. IMPLEMENTS
Test::Unit::Assertion::Regexp implements the Test::Unit::Assertion interface, which means it can be plugged into the Test::Unit::TestCase and friends' "assert" method with no ill effects. DESCRIPTION
The class is used by the framework to provide sensible 'automatic' reports when a match fails. The old: $self->assert(scalar($foo =~ /pattern/), "$foo didn't match /.../"); seems rather clumsy compared to this. If the regexp assertion fails, then the user is given a sensible error message, with the pattern and the string that failed to match it... AUTHOR
Copyright (c) 2001 Piers Cawley <pdcawley@iterative-software.com>. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
o Test::Unit::TestCase o Test::Unit::Assertion perl v5.8.8 2006-09-13 Test::Unit::Assertion::Regexp(3pm)

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