Hi,

I would like to test if a directory exists. If not, mkdir it. I wrote code like this:

#!/usr/bin/perl
if (! -d abc) {
    mkdir "abc", "0777" or die "Can't mkdir abc: $!";
}

[download]

I guess if the directory exist, there would prompt nothing. But it is interesting that the linux prompts "Can't generate abc: File exists". Can anybody help me to understand why the code still want to mkdir even if (! -d abc) implies false? thanks.

In reply to mkdir usage by skyworld_chen

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