UMASK(1)              (Essential Utilities)              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.













  Page 1                                                   May 1989