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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FAXLOCK(8)                                                    System Manager's Manual                                                   FAXLOCK(8)

NAME
faxlock - tell a HylaFAX server to switch to LOCKWAIT state SYNOPSIS
/usr/sbin/faxlock [ -q dir ] modem DESCRIPTION
faxlock sends a message to a HylaFAX faxgetty(8) process servicing modem telling it to change its state to LOCKWAIT The specified 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''. OPTIONS
-q dir Use a spooling area other than /var/spool/hylafax. NOTES
When faxgetty changes it's state to LOCKWAIT, it will start looking for the UUCP lockfile for the device, and when the device is no longer locked, proceed to re-initialize the modem. FILES
/var/spool/hylafax default spooling area /var/spool/hylafax/FIFO fifo for contacting faxq Consult hylafax-server(5) for a complete discussion of the structure and content of the spooling area. SEE ALSO
hylafax-server(5), faxq(8), faxgetty(8) March 3, 1995 FAXLOCK(8)