mkfifo(1)             MPE/iX Shell and Utilities             mkfifo(1)
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  NAME
       mkfifo -- create a FIFO special file

  SYNOPSIS
       mkfifo [-p] [-m mode] file...

  DESCRIPTION

       mkfifo creates one or more FIFO special file with the given
       names.

  Options
       mkfifo accepts the following options:

       -m mode
            lets you specify file permissions for the files.  The mode
            argument may have the same value as the mode for chmod; see
            chmod(1) for more details.

       -p   creates intermediate directory components that don't already
            exist.  For example, if one of the file arguments is
            dir/subdir/file and subdir doesn't exist already, this
            option creates it.  Directories are created with the mode
            u+wx, which means read, write, and search permissions to the
            owner.

  DIAGNOSTICS
       Possible exit status values are:

       0  Successful completion.

       1  An error occurred.

  Messages

       Message:  fifo file "filename": system error
       Cause:    See syserror(3).
       Action:   See syserror(3).

       Message:  Insufficient memory
       Cause:    There were not enough free system resources to perform
                 the specified operation.
       Action:   Free up more resources.

       Message:  Missing mode after -m
       Cause:    You specified the -m option without providing the mode
                 argument.
       Action:   Provide the missing mode.

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  mkfifo(1)             MPE/iX Shell and Utilities             mkfifo(1)
  ______________________________________________________________________

       Message:  Octal mode may contain only digits [0-7] in numstring
       Cause:    When using the octal mode to indicate new access per-
                 missions, you specified a string numstring which con-
                 tained a character other than the digits 0 to 7.
       Action:   Make sure that all mode values in octal mode are valid
                 octal numbers, containing only the digits 0 through 7.

       Message:  Unknown option "-option"
       Cause:    You specified an option that is not valid for mkfifo.
       Action:   Check the DESCRIPTION section of this man page for a
                 list of valid mkfifo options.

       Message:  Unknown or missing operator in symbolic mode "mode-
                 string"
       Cause:    When using the symbolic mode to indicate new access
                 permissions, you specified a string modestring which
                 had either a missing or unrecognized operator.
       Action:   Make sure that all mode values in symbolic mode contain
                 one of the following operators: +, -, or =.

  PORTABILITY
       POSIX.2. x/OPEN Portability Guide 4.0.  All UNIX systems.

       The -p option is an extension to the POSIX standard.

  MPE/iX NOTES
       For information on how the current MPE/iX implementation may
       affect the operation of this utility, see Appendix A, MPE/iX
       Implementation Considerations.

  SEE ALSO
       chmod(1), create(1), mkdir(1), mknod(1), umask(1)

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