UMASK(1)                                                 UMASK(1)



     NAME
          umask - set file-creation mode mask

     SYNOPSIS
          umask [ ooo ]

     DESCRIPTION
          The user file-creation mode mask is set to ooo.  The three
          octal digits refer to read/write/execute permissions for
          owner, group, and others, respectively (see chmod(2) and
          umask(2)).  The value of each specified digit is subtracted
          from the corresponding ``digit'' specified by the system for
          the creation of a file (see creat(2)).  For example, umask
          022 removes group and others write permission (files
          normally created with mode 777 become mode 755; files
          created with mode 666 become mode 644).

          If ooo is omitted, the current value of the mask is printed.

          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.

     SEE ALSO
          chmod(1), sh(1).
          chmod(2), creat(2), umask(2), profile(4) in the Programmer's
          Reference Manual.

     ORIGIN
          AT&T V.3























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