Shell Programming and Scripting

GOODNUMBERS="1 2 3 4 5 6 3 3 34 34 5 66 12"
BADNUMBERS="7 3 12 5 66"

for eachnum in `echo ${GOODNUMBERS}`
do
        echo ${BADNUMBERS} | gawk -v threshold=${eachnum} '$1 != threshold'
done

for i in $GOODNUMBERS
do
  for j in $BADNUMBERS
  do
    if [ $i = $j ]; then
      continue 2
    fi
  done
  echo $i
done

awk -vg="${GOODNUMBERS}" -vb="${BADNUMBERS}" 'BEGIN{n=split(g, a); for(i=1; i<=n; i++) {if(b !~ "(^| )" a[i] "($| )") print a[i]}}'

awk -vb="${BADNUMBERS}" '{n=split($0, a); for(i=1; i<=n; i++) {if(b !~ "(^| )" a[i] "($| )") print a[i]}}' <<<${GOODNUMBERS}

G=($GOODNUMBERS)
for i in $BADNUMBERS
   do for j in ${!G[@]}
      do [ $i -eq 0"${G[j]}" ] && unset G[j]
      done
   done
echo ${G[@]}
1 2 4 6 34 34