Bool defines a bool flag with specified name, default value, and usage string.

Bool defines a database flag with specified name, default value, and usage string.

Float64 defines a float64 flag with specified name, default value, and usage string.

Int defines a int flag with specified name, default value, and usage string.

Int64 defines a int64 flag with specified name, default value, and usage string.

String defines a string flag with specified name, default value, and usage string.

Uint defines a uint flag with specified name, default value, and usage string.

Uint64 defines a uint64 flag with specified name, default value, and usage string.