mkfifo(1)						      General Commands Manual							 mkfifo(1)

NAME

       mkfifo - Makes FIFO special files

SYNOPSIS

       mkfifo [-m mode] file...

       The mkfifo utility creates FIFO special files in the order specified.

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       mkfifo:	XCU5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

OPTIONS

       Sets  the  file	permission bits of the new file to the specified mode value, after creating the FIFO special file.  The mode argument is a
       symbolic mode string (see chmod), in which the operator characters + (plus sign) and - (minus) are interpreted relative to the default file
       mode for that file type.  The + character adds permissions to the default mode, and - deletes permissions from the default mode.

	      [Tru64 UNIX]  The default mode is a=rw (permissions of rw-rw-rw) as modified by the current file mode creation mask (umask).

OPERANDS

       The path name of a FIFO special file to be created.

DESCRIPTION

       For  each file argument, mkfifo performs actions equivalent to the mkfifo() call with the following arguments: The file argument is used as
       the pathname argument.  If the -m option is not used, the value of the bitwise inclusive OR of S_IRUSR, S_IWUSR, S_IRGRP, S_IWGRP, S_IROTH,
       and S_IWOTH is used as the mode argument.

EXIT STATUS

       The  mkfifo  utility exits with one of the following values: Indicates that all the specified FIFO special files were created successfully.
       Indicates that an error occurred.

EXAMPLES

       To create a FIFO special file with permissions prw-r--r--, enter: mkfifo -m 644 /tmp/myfifo

	      The command creates the /tmp/myfifo file with read/write permissions for the owner and read permission for the group and for others.
	      To create a FIFO special file using the - (minus) operand to set permissions of prw-r-----, enter: mkfifo -m g-w,o-rw /tmp/fifo2

	      The command creates the /tmp/fifo2 file, removing write permission for the group and all permissions for others.

ENVIRONMENT VARIABLES

       The  following  environment  variables affect the execution of mkfifo: Provides a default value for the internationalization variables that
       are unset or null. If LANG is unset or null, the corresponding value from the default locale is used.  If any of  the  internationalization
       variables  contain  an  invalid	setting,  the  utility behaves as if none of the variables had been defined.  If set to a non-empty string
       value, overrides the values of all the other internationalization variables.  Determines the locale for the interpretation of sequences	of
       bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments).  Determines the locale for the
       format and contents of diagnostic messages written to standard error.  Determines the location of message catalogues for the processing	of
       LC_MESSAGES.

SEE ALSO

       Commands:  mkdir(1), mknod(8)

       Functions:  chmod(2), mkdir(2), mkfifo(3), mknod(2), umask(2)

       Standards:  standards(5)

																	 mkfifo(1)