bash_n_examples/bash/extglob/bash-extglob.sh

   1 shopt -s extglob
   2 A="ASASDD-D-F-G"
   3 echo 1 ${A//S+([A-Z])-}
   4 echo 2 ${A//S*([A-Z])-}
   5 ##:(pattern) zero or one occurrences of the given patterns
   6 ##*(pattern) zero or more occurrences of the given patterns
   7 ##+(pattern) one or more occurrences of the given patterns
   8 ##@(pattern) one of the given pattern
   9 ##!(pattern) anything except one of the given patterns
  10 echo 3 ${A/D*([A-Z-])-/__}
  11 echo 4 ${A/%-*([GH])/-ES}
  12 echo 5 ${A/%-*([GH])/}