First, it's not "unmask", it's umask (no N). You can read more about the Perl version here.

As to your direct question, the umask is set on a per-process basis. There's no "system umask", only what is set by your administrator in user startup files. If you set the umask, it will affect all files (and hence directories) created after that point by that process. In systems I know, the umask is inherited by child processes, but I'm not sure if that's true of all Unix-oid systems or not. It's certainly not true of Win32 systems, and I can't really speak to how it's implemented there.

HTH

In reply to Re: Does changing 'unmask' change the system's default value? by VSarkiss
in thread Does changing 'umask' change the system's default value? by newbie00

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