LinuxQuestions.org - piping input during run-time

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piping input during run-time

Hi,
I have an interactive application (shell) that takes input during runtime. Now, I need to create a channel such a way that when I write to that channel, the input goes to that application. After executing that line, it should wait for next input (through that channel).

I dont know how to do that in bash using redirections, (and how to google for that).

Basically, I want something like this

### Start the application
$ appln [operator] inputchannel > outputfile &
### Send commands to the appliation that runs in background
$ echo "command1 args" > inputchannel
$ echo "command2 args" > inputchannel
....

Can anyone please help me?

Thanks.

I figured it out. But, dont know if its the right way

Create a script "run.sh" like

Code:

rm my_pipe

mknod my_pipe p

str="tmp"

while [ $str <> "exit" ];

do

        str=`cat my_pipe`;

        echo $str;

        if [ $str == "exit" ]; then

                break;

        fi;

done

Then, run the application (in this case bash shell) as

./run.sh | bash

This script would exit at the command "exit".

I guess there should be some better way to do it...