Problem in making a script

[Amrit Pal Pathak]

On Sat, Jul 2, 2011 at 5:07 AM, Nils Kassube <kassube at gmx.net> wrote:

> 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: "
> read device
> ...
> echo "device = /dev/$device" >> "$TEMP"
>   Here $TEMP is temporaily file name?
>
      Can I use here a variable then can replace $fname with
     that variable in following code.

sudo wget http://202.164.53.116/~amritpal/edit/kannel.conf
sudo chmod a+w kannel.conf
echo -n "Please enter device name: "
read device
echo "device = /dev/$device" >> "$TEMP"
TEMP=$(mktemp)
head -n $((29 - 1)) "kannel.conf" > "$TEMP"
echo "$fname" >> "$TEMP"
LEN=$(cat "kannel.conf"|wc -l)
tail -n $(($LEN - 29)) "kannel.conf" >> "$TEMP"
mv  "$TEMP" "kannel.conf"



> 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.


   Ok i will read it now.Thanks.

> 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.
>
> Thanks again.
>
    amritpalpathakgne.wordpress.com
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