Re: umask --help

[Chris Down]

Hi Jon,

As is standard with other buitins, umask is documented at `help umask`:

    chris@gopher:~$ help umask
    umask: umask [-p] [-S] [mode]
        Display or set file mode mask.
        
        Sets the user file-creation mask to MODE.  If MODE is omitted, prints
        the current value of the mask.
        
        If MODE begins with a digit, it is interpreted as an octal number;
        otherwise it is a symbolic mode string like that accepted by chmod(1).
        
        Options:
          -p    if MODE is omitted, output in a form that may be reused as input
          -S    makes the output symbolic; otherwise an octal number is output
        
        Exit Status:
        Returns success unless MODE is invalid or an invalid option is given.

The umask builtin is also documented in `man bash`.

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