AME, or all shell options if no
    OPTNAMEs are given, with an indication of whether or not each is set.
    
    Options:
      -o	restrict OPTNAMEs to those defined for use with `set -o'
      -p	print each shell option with an indication of its status
      -q	suppress output
      -s	enable (set) each OPTNAME
      -u	disable (unset) each OPTNAME
    
    Exit Status:
    Returns success if OPTNAME is enabled; fails if an invalid option is
    given or OPTNAME is disabled.