scripts/_get_next_group.sh

   1 NUM="$1"
   2 if [ -z "$NUM" ]; then
   3     DAEMONGRP=1000
   4 else
   5     if echo "$NUM" | grep -q "[^[:digit:]]"; then
   6         echo "Parameter not numeric"
   7         exit 1
   8     else
   9         DAEMONGRP="$NUM"
  10     fi
  11 fi
  12
  13 GRPS=`cat /etc/group | sort -n -k 3 -t : | cut -d : -f 3`
  14
  15 PREVGRP=$(expr $DAEMONGRP - 1)
  16
  17 for i in $GRPS; do
  18     [ $i -lt $DAEMONGRP ] && continue
  19     if [ $(expr $i - $PREVGRP) -ge 2 ]; then
  20         echo $(expr $PREVGRP + 1)
  21         exit 0
  22     else
  23         PREVGRP=$i
  24     fi
  25 done
  26 echo $(expr $i + 1)