-d takes a string parameter (possibly in $_) and returns true if the string represents the path to a directory. -f does the same but tests for the path being that of a file. These and a slew of other related functions are described in perlfunc at the start of the alphabetical listing of functions.

True laziness is hard work

In reply to Re: What are -d and -f for? by GrandFather
in thread What are -d and -f for? by tej

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