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.

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• 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

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