umask(1)                                                    umask(1)


       NAME
             umask - set file-creation mode mask

       SYNOPSIS
             umask [-S] [mask]

       DESCRIPTION
             The user file-creation mode mask is set to mask.  This mask
             shall affect the initial value of the file permission bits of
             subsequently created files (see creat(2)).

             The mask can be either symbolic form, or octal form. See
             chmod(1) for a description of the syntax for mask. If mask is
             in symbolic form, then the umask is set to the logical
             complement of the result of the symbolic definition. (That is,
             the symbolic form should specify the permissions to allow
             through, not the permissions to mask out.) If the mask is in
             octal form, then each set bit will mask the matching
             permission (the complement of the symbolic form).

             If mask is omitted, the current value of the mask is printed
             in either symbolic or octal form (see the -S option).

             umask is recognized and executed by the shell.

             umask can be included in the user's .profile (see profile(4))
             and invoked at login to automatically set the user's
             permissions on files or directories created.

       OPTIONS
             -S    Mask is in symbolic form. If this option is not
                   specified, the mask is printed in octal form. The output
                   for symbolic form is the same as the output from
                   printf(1) given this input:
                         "u=%s,g=%s,o=%s\n" owner_perms group_perms other_perms

                   Each permissions string has the same meaning as
                   permissions in the arguments to chmod(1).

       EXAMPLES
             For example, umask 022 and umask a=rx,u+w, both remove group
             and others write permission (files normally created with mode
             777 become mode 755; files created with mode 666 become mode
             644).




                           Copyright 1994 Novell, Inc.               Page 1

      umask(1)                                                    umask(1)


      FILES
            /usr/lib/locale/locale/LC_MESSAGES/uxcore.abi
                  language-specific message file [See LANG on environ(5).]

      REFERENCES
            chmod(1), chmod(2), creat(2), profile(4), sh(1), umask(2)

      NOTICES
            The octal form of umask is only provided for backward
            compatibility, and may not be supported in future releases. It
            should therefore be avoided.





































                          Copyright 1994 Novell, Inc.               Page 2