Enjoyed your podcast. Thanks for your work.  I'll
have to start using the substring feature.
--

Another example:

Ex
  $ forwork=Mustang
  $ car=forwork
  $ echo ${!car}
  Mustang

Ex
  $ set -- joy pain bliss; myargc=$#; echo ${!myargc}  
  bliss
  $ set -- joy pain bliss; myargc=$#; echo ${!$#}
  bash: ${!$#}: bad substitution

More bash tips at:

  https://TRodman.com/blog
