Syntax
      shopt [-pqsu] [-o] [optname ...]

Options
     -s   Enable (set) each optname

     -u   Disable (unset) each optname.

     -p   Display a list of all settable options, with an indication of 
          whether or not each is set. The output is displayed in a form 
          that can be reused as input. (-p is the default action)

     -q   Suppresses normal output; the return status indicates whether the optname
          is set or unset. If multiple optname arguments are given with '-q',
          the return status is zero if all optnames are enabled; non-zero otherwise. 

     -o   Restricts the values of optname to be those defined for the '-o' option to 
          the set builtin.