A shell script with a for loop and an "array"

Question

How can I use this sh script with for loop and an "array".
I would like to call the domains with a for loop inside the if. Example:

for domain in $DOMAINS
do
  printf '%s\n' "$domain"
done

So if you add that under if then the printf should be like what? For example, the wlstop I would like to be called where the printf is with wls wlstop $domain.

#!/usr/bin/sh

ENV=$1
DOMAINS="1 2 3"

wls (){
    echo "$0 : $1 -v -d $2" 
    $1 -v -d $2
}

remove (){
    echo "$0 : Removing /domains/$1/servers/*" 
    set -x
    rm -rf /domains/$1/servers/*
    set +x
}

echo "$0 : Running wlsfullclean for $ENV"

if [ "$ENV" = "Utv" ]; then

    #Stop domain
    wls wlsstop 1   
    wls wlsstop 2
    wls wlsstop 3

    #Remove content in servers folder
    remove 1
    remove 2
    remove 3

    #wlsclean
    wls wlsclean 1
    wls wlsclean 2
    wls wlsclean 3

    #wlscfi
    wls wlscfi 1
    wls wlscfi 2
    wls wlscfi 3

    #Start server
    wls wlsstart 1
    wls wlsstart 2
    wls wlsstart 3

elif [ "$ENVI" = "Prod" ]; then
    echo "Prod"
fi

Answer 1

if    [ Utv = "$ENV" ]
then  for  domain in 1 2 3
      do   for   wls in  stop clean cfi start
           do    wls wls"$wls" "$domain"
                 [ stop != "$wls" ] ||
                 remove "$domain"
           done
      done
fi

The in ... field is an array assignment. You assign the loop's iterators there. You can use a preset array, or you can just build one in as I do here. It really does not make sense to go to the trouble of assigning some shell variable for the sole purpose of assigning a for loop array - its twice the work, and not as easy to keep track of. That is my just my opinion though, of course.

Anyway, the in ... field is actually optional, because there is a preset array that the for loop will default to using anyway - the shell's arg array. It is for this reason that I believe this kind of stuff makes more sense in a shell function.

 wls_lp(){
     for  wls  in     stop clean cfi start
     do   for  domain
          do          set -x -- "-${-:--}" ${-:+"--"} "$@"
                      wls "wls$wls"  "$domain"
                      [ stop != "$wls" ] ||
                      remove "$domain"
                      { set +x "$@"; } 2>/dev/null
     done;done 
}

If you put that function in your script you can just run the whole loop over a list of domains like:

if     [ Utv = "$ENV" ] 
then   wls_lp domain1 domain2 domain3
fi