Shell Programming and Scripting

If you run this script from a terminal, you should be able to read < /dev/tty to use the terminal directly without bothering stdin. /dev/tty is a special device which opens whatever device is your controlling terminal.

If you run this without a terminal, this will of course malfunction...

Thanks Corona. The script is indeed run from a terminal. I will try this in my script.

---------- Post updated at 07:06 PM ---------- Previous update was at 06:53 PM ----------
I tried it and it works a charm. cheers

Thanks. For your reply here.i have the same issue. But. I am not able to read from the file the same way. Is this external file supposed to b in some format.what I did was aa

Parm.txt has following contents
User="abc"
Pwd="password"
Export $User $Pwd

And script.ksh has
User=$1
Pwd=$2

Then I executed

./script.ksh ./Parm.txt

But it's not working. Please suggest. Thanks in advance.

You dont need to export the variables $User and $Pwd. Just executing the parm script will export the variables.

Consider that there are two files:
Parm.sh
User="abc"
Pwd="password"

script.ksh
Your code

If you want to inherit the values of User and Pwd from the parm.sh into script.ksh, there are two ways to go about doing it:

1. Execute the parm.sh script before executing the script.ksh from the terminal.
$ ./parm.sh
$ echo $User $pwd
$ ./script.ksh

2. The better, more preferred option will be to invoke the parm.sh and its values from within script.ksh as follows:

script.ksh
. ./parm.sh
echo $User $Pwd
**Your code***

In the above example, the variables User and Pwd will be inherited by the script