perlre, perlretut
"." means any character. 

/\.\Q$classType\E\.\Q$yearMonth\E.{4}00\.XXX_XXXXpm\z/

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or 
/^.{4}\.\Q$classType\E\.\Q$yearMonth\E.{4}00\.XXX_XXXXpm\z/

[download]

In reply to Re: Grepping from an Array using a variable as the pattern to be matched by ikegami
in thread Grepping from an Array using a variable as the pattern to be matched by raddox

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