umask(1)                            CLIX                            umask(1)



  NAME

    umask - Sets file-creation mode mask

  SYNOPSIS

    umask [ooo]

  DESCRIPTION

    The umask command sets the file-creation mode mask to ooo.  The three
    octal digits refer to read/write/execute permissions for owner, group, and
    others, respectively (see chmod() and umask()).  The value of each
    specified digit is subtracted from the corresponding ``digit'' specified
    by the system for the creation of a file (see creat()).  For example,
    umask O22 removes the write permission for group and others (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 displayed.

    The umask command is recognized and executed by the shell.

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

  EXAMPLES

    To display the user's current mask, enter the following:

    umask


  EXIT VALUES

    The umask command exits with a nonzero value if it fails.

  RELATED INFORMATION

    Commands:  chmod(1), sh(1)

    Functions:  chmod(2), creat(2), umask(2)

    Files:  profile(4)









  2/94 - Intergraph Corporation                                              1