The file mode creation mask (often called the umask) determines the default permissions for any file created by the process. For example, a file created by the create command has the permissions specified by the umask unless the create command specifies explicit permissions.
Calling umask without a mode argument displays the current umask.
displays the umask in a symbolic form:
giving user, group and other permissions. Permissions are specified as combinations of the letters r (read), w (write) and x (execute).
Possible exit status values are:
POSIX.2. x/OPEN Portability Guide 4.0.
Windows systems do not support the umask command. This manual page is provided for information only.
This command is built into the MKS KornShell.
MKS Toolkit for Power Users
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MKS Toolkit for Enterprise Developers 64-Bit Edition
MKS Toolkit 9.5 Documentation Build 3.