Script loop question

[Oliver Marshall]

Thanks for that. I've also just found the magic shift command which is superb (MS are you listening?). Using it like this;

# Loop until all parameters are used up
while [ "$1" != "" ]; do
    echo "Parameter 1 equals $1"
    echo "You now have $# positional parameters"

    # Shift all the parameters down by one
    shift

done


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-----Original Message-----
From: ubuntu-users-bounces at lists.ubuntu.com [mailto:ubuntu-users-bounces at lists.ubuntu.com] On Behalf Of Markus Schönhaber
Sent: 12 November 2009 09:13
To: ubuntu-users at lists.ubuntu.com
Subject: Re: Script loop question

Oliver Marshall:

> I have a script that takes an argument (a file name) and performs
> actions on that file. I want to mod the script so that i can pass, as
> arguments, multiple filenames and have the script perform the same
> set of commands on each file in turn, like this;
> 
> ./filename.sh file1 file2 file3
> 
> etc.
> 
> I guess it's bringing the two parts of the loop and the arguments
> together to loop through each argument in turn, but that's where I
> get stuck.

for f in "$@"; do
  echo $f
done

-- 
Regards
  mks


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