tldr/pages/common/shopt.md

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.

• 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