Doubts on FIFO


 
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Old 06-06-2008
Doubts on FIFO

Hi ,
I m beginner for Unix and i want to use FIFO in my 2 Scripts . I want 1 script to read data from FIFO and other will write into FIFO.

Despite reading so many articles/posts i am still unable sunchronize my scripts.


My doubts are

1> Do We require both scripts as daemons to use FIFO ?
2> Below is my code ,pls modify it to make it work .


$ cat write
echo "name:" "Akshay" > /home/nbkpxj6/db.FIFO


$cat read
eventQueue=/home/user/db.FIFO

while : ; do


cat $eventQueue | while read name; do
echo $name
done

done

I m getting error " 0403-006 Execute permission denied."

I know above code can work for 2 separate terminals , but i want single terminal to run both scripts, write value and read value from FIFO.


Thanks in advance

Last edited by Akshay; 06-06-2008 at 09:04 AM..
 
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FAXQUIT(8C)															       FAXQUIT(8C)

NAME
faxquit - tell a HylaFAX server to terminate SYNOPSIS
/usr/sbin/faxquit [ -q queue-dir ] [ modem ] DESCRIPTION
faxquit sends a message to a HylaFAX server process telling it to quit operation. If modem is specified, the faxgetty(8C) process servicing the specified modem is notified. modem can either be the name (typically the last component of the terminal port the modem is attached to), or the full name of the associated FIFO named pipe file, e.g. ``FIFO.ttym2''. If no modem is specified, faxquit will send the request to the ``FIFO'' named pipe file causing the HylaFAX queue manager process to termi- nate. Note that server processes may not terminate immediately. In particular the faxq process will not exit until any active jobs are com- pleted; this is necessary for proper operation (faxq must wait for child processes to terminate so that it can collect their exit status and update the state of the jobs being operated on). OPTIONS
-q dir Use a spooling area other than /var/spool/fax. FILES
/var/spool/fax default spooling area /var/spool/fax/FIFO fifo for contacting faxq Consult hylafax-server(5F) for a complete discussion of the structure and content of the spooling area. SEE ALSO
hylafax-server(5F), faxq(8C), faxgetty(8C) October 3, 1995 FAXQUIT(8C)