Shell Programming and Scripting

$ cat treatment3.awk

BEGIN { FS=","; OFS=","
        split("parmeter1,parmeter2,parmeter5,parmeter3,parmeter4,parmeter6,parmeter7,parmeter10,parmeter9,parmeter11,,parmeter12,parmeter15,parmeter14,parmeter13", ORDER);
}

!T { TITLE=$1 ; T=1 ; next }

/^[ \t]*,/ {    split($2, Z, "=");
                VALUE[Z[1]]=Z[2];       }

/;;/ {  $0="";  T=""
        for(X in ORDER)
        {
                if(ORDER[X]) $X=" "ORDER[X]"="VALUE[ORDER[X]];
                else    $X=""
        }

        $1=TITLE$1
        $NF= $NF ";;"
        print
}

$ awk -f treatment3.awk data

Treatment parmeter1=value, parmeter2=value, parmeter5=value, parmeter3=value, parmeter4=value, parmeter6=value, parmeter7=value, parmeter10=value, parmeter9=value, parmeter11=value,, parmeter12=value, parmeter15=value, parmeter14=value, parmeter13=value;;
Treatment parmeter1=value, parmeter2=value, parmeter5=value, parmeter3=value, parmeter4=value, parmeter6=value, parmeter7=value, parmeter10=value, parmeter9=value, parmeter11=value,, parmeter12=value, parmeter15=value, parmeter14=value, parmeter13=value;;

$