Perl doesn't reflect that I want to make dir and set permission. If I write like this mkdir('dir', 0777); but this way will be setting 755. How to solve this problem↓http://perl.g.hatena.ne.jp/Cress/20080611/1213184541 umask(0); mkdir('dir…

I have not understand any word that it means what. example, Multithread,Multiprocess and Multitask any others. So, They are very similar! I mistake often. I list the meaning each word, I will not make a mistake more.

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