# 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
$
cheat.sh
tldr