python: reading fifo example

fifo - first-in first-out special file, named pipe

A FIFO special file (a named pipe) is similar to a pipe, except that

       it is accessed as part of the filesystem.  It can be opened by

       multiple processes for reading or writing.  When processes are

       exchanging data via the FIFO, the kernel passes all data internally

       without writing it to the filesystem.  Thus, the FIFO special file

       has no contents on the filesystem; the filesystem entry merely serves

       as a reference point so that processes can access the pipe using a

       name in the filesystem.

SEE ALSO  

mkfifo(1), open(2), pipe(2), sigaction(2), signal(2), socketpair(2), mkfifo(3), pipe(7)

fifo reader code:

#!/usr/bin/python

__author__ = "Ali Okan Yuksel <okan@siyahsapka.org>"

import sys

def main():

        print "INFO application started"

        fifo="okantest.fifo"

        fd=open(fifo,"r")

        while True:

                line = fd.readline()

                if line !="":

                        sys.stdout.write(line)

if __name__=="__main__":

        main()

data sender bash call:

[root@logserver ~]# for i in `seq 1 1000`; do echo $i > /opt/proxy/okantest.fifo ; done