Thank you. I understand better now. I had to look up the "?:" and "?!". I'm going to play with it a little.
     I've also thought of something like /^PH.+[^HI]F?\-000/
     Some examples of the file names are 

PH0024080209401400001PH-000
PH0026072913114200001IF-000
PH0029072911352700001AF-000

[download]
     I wonder why it worked on 5.6.1? I'll have to double-check that.

Invulnerable. Unlimited XP. Unlimited Votes. I must be...
        GhodMode

In reply to Re: Re: old Perl regex problem by GhodMode
in thread old Perl regex problem by GhodMode

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