(coreutils) mkfifo invocation

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 12.4 `mkfifo': Make FIFOs (named pipes)
 =======================================
 
 `mkfifo' creates FIFOs (also called "named pipes") with the specified
 names.  Synopsis:
 
      mkfifo [OPTION] NAME...
 
    A "FIFO" is a special file type that permits independent processes
 to communicate.  One process opens the FIFO file for writing, and
 another for reading, after which data can flow as with the usual
 anonymous pipe in shells or elsewhere.
 
    The program accepts the following option.  Also see  Common
 options.
 
 `-m MODE'
 `--mode=MODE'
      Set the mode of created FIFOs to MODE, which is symbolic as in
      `chmod' and uses `a=rw' (read and write allowed for everyone) for
      the point of departure.  MODE should specify only file permission
      bits.   File permissions.
 
 `-Z CONTEXT'
 `--context=CONTEXT'
      Set the default SELinux security context to be used for created
      FIFOs.
 
 
    An exit status of zero indicates success, and a nonzero value
 indicates failure.
 

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(coreutils) mkdir invocation

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(coreutils) mknod invocation