Problem in making a script
kassube at gmx.net
Sat Jul 2 09:07:15 UTC 2011
Amrit Pal Pathak wrote:
> Till now what i have did =>user will also enter the that part of the
> line which is not needed to change in original file.
> suppose in orignal file line 9 holds:
> device = /dev/ttyACM0
> So in scripting i have use echo command as:
> > echo "Please enter your port address in a format => device =
> > /dev/your-port-address "
> What i think it is not right choice.He should enter only
> "ttyACM0" .Till now we are replacing the whole line .So how we can
> achieve it ?
You could extend the echo command with the rest of the text you need in
the line. Something like this:
echo -n "Please enter device name: "
echo "device = /dev/$device" >> "$TEMP"
However I would really suggest you learn bash scripting with the help of
one of the manuals I mentioned in a previous mail. Or as an alternative
I can recommend the O'Reilly book "Learning the bash shell" by
Cameron Newham & Bill Rosenblatt. Yes, that takes time but that way you
know what you are doing and you don't have to ask for every tiny detail
and then hope for a useful answer.
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