shopt

Manage Bash shell options: variables (stored in $BASHOPTS) that control behavior specific to the Bash shell. Generic POSIX shell variables (stored in $SHELLOPTS) are managed with the set command instead. More information: https://www.gnu.org/software/bash/manual/html_node/The-Shopt-Builtin.html.

• List of all settable options and whether they are set:
  shopt
• Set an option:
  shopt -s {{option_name}}
• Unset an option:
  shopt -u {{option_name}}
• Print a list of all options and their status formatted as runnable shopt commands:
  shopt -p
• Show help for the command:
  help shopt