So I know umask can restrict privileged users, using this format umask ugo.

I understand that the read = 4, write = 2, and exec = 1. However, when I type umask, it returns 4 digits which is 0022 or 0073. I have no understanding of how does this work now because there is an extra digit. What is that extra digit and what does 0022 mean?

_{Note: Migrating this question that will be closed from Stackoverflow per this recommendation.}

So I know umask can restrict privileged users, using this format umask ugo.

I understand that the read = 4, write = 2, and exec = 1. However, when I type umask, it returns 4 digits which is 0022 or 0073. I have no understanding of how does this work now because there is an extra digit. What is that extra digit and what does 0022 mean?

So I know umask can restrict privileged users, using this format umask ugo.

I understand that the read = 4, write = 2, and exec = 1. However, when I type umask, it returns 4 digits which is 0022 or 0073. I have no understanding of how does this work now because there is an extra digit. What is that extra digit and what does 0022 mean?

_{Note: Migrating this question that will be closed from Stackoverflow per this recommendation.}

So I know umask can restrict privileged users, using this format umask ugo.

I understand that the read = 4, write = 2, and exec = 1. However, when I type umask, it returns 4 digits which is 0022 or 0073. I have no understanding of how does this work now because there is an extra digit. What is that extra digit and what does 0022 mean?

_{Note: Migrating this question that will be closed from Stackoverflow per this recommendation.}