i want to do 2 things

1) i should wait for a file called A.txt to fall on a specific path on the server
2) once the file arrives immediately another script called B.sh should be executed.

Could you please throw somelight on this.
Any code if already present that would be helpful.

Regards
Rajesh

How large is A.txt? It can "appear" on the host before all of the data has been written. If you "immediately" run another script, you risk affecting a change to a partial file...

hi

A.txt is just an indicator /dummy file... am waiting for this file just to make sure that this is the time ... that i should run b.sh script

One way is to sit in a sleep loop.

while true
do
        if [ -f A.txt ]
        then
                sleep 10
        else
                break
        fi
done
b.sh

Yes the file is a touch file

Does the file you are using as a kind of semaphore original on the same server as the script you are running, or does it originate on a different server?

This link might help you a bit:
scripting running every minute

Have the script check for the existence of the file that you are referring to - if it finds the file, do stuff...

- Avron