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From: QasimMalik.786 on 8 Apr 2008 18:11
I want to Implement a Synchronisation primitive such as a semaphore
that will ensure mutual exclusion, prevent deadlock when concurrent
request are made from the clients. C scripts in the UNIX environment
in the below script

I ma just trying to stop two clients accessing the same server file at
the same time


echo " select any option to execute:"
echo " c or C: To connect Client to Server"
echo " r or R: To make a read request"
echo " s or S: I want to sort data"
echo " g or G: Look for a certain word in a file"
echo " e or E: quit"
echo -n "Enter your option and press <Enter>:"
set selection = `head -1`

switch ("$selection")
case [cC]:
echo -n "enter server name"
set servername = `head -1`
find $servername
breaksw

case [rR]:

cp
echo -n "enter server file to read content"
set serverfile = `head -1`
breaksw

case [sS]:

sort
echo -n "enter server file to sort"
set serverfile1 = `head -1`
breaksw

case [qQ]:

exit 0

breaksw

default:

case [qQ]:

exit 0

breaksw

default:
echo " wrong option."
exit 1
breaksw
endsw
exit 0


Any help would greatly help

I am willing to do any thing in the return even pay
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