I am having a really hard time understanding how umask works.
How is something that is 666 masked with 001 still 666 ?
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Why do you think it is? What commands did you run and what happened?– MikelCommented Jan 27, 2016 at 1:57
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1 Answer
A umask value of 001 says that it is preventing the creation of files with other executable permissions. (Actually not preventing the creation, as preventing the executable-permissions).
A 666 mode in an open statement only permits user+group+other for read and write permissions. So the umask has no effect on that.
However umask does not affect chmod.
answered Jan 27, 2016 at 1:57
