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Shell Programming and Scripting

Problems with SED

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# 8  
Old 03-01-2006
Any assistance please !!
# 9  
Old 03-01-2006
One of those days when nothing clicks ! Smilie

Here is a shell script that will do the same thing.

Code:
#! /bin/ksh
> output.txt
while read line
do
  if [[ "$line" == *IPAddr* ]] ; then
    cat append.txt >> output.txt
  fi ;
  echo "$line" >> output.txt
done < input.txt

# 10  
Old 03-01-2006
Thanks for that Vino,

This is what i did :-

Quote:
#! /bin/bash

> sms.conf
while read line
do
if [[ "$line" == *IPAddr* ]] ; then
cat append.txt >> sms.conf
fi ;
echo "$line" >> sms.conf
done < sms.conf
now after i execute this script, the sms.conf file becomes completely balnk Smilie

did i mess up some thing ?

Thanks once again
# 11  
Old 03-01-2006
Quote:
Originally Posted by systemali
did i mess up some thing ?
Ofcourse, you did.

I mentioned output.txt and input.txt. In your script, there is just one file - sms.conf

bash does not provide a way to perform read and write on a single file at the same time.

You output everything to a new file. And then later, rename it to the original file.

Code:
#! /bin/bash

> sms.conf.new
while read line
do
if [[ "$line" == *IPAddr* ]] ; then
cat append.txt >> sms.conf.new
fi ;
echo "$line" >> sms.conf.new
done < sms.conf

mv sms.conf.new sms.conf

# 12  
Old 03-01-2006
Fantastic...You are too good Vino Smilie My apologies for the mess up, m still getting used to this.

Thanks a lot once again. I hope i can bother you again if needed Smilie

Cheers !!!!
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