info signals signal1 [signal2 ..]
In the first form a list of the existing signals and actions are shown.
In the second form, list just the given signals and their definitions are shown.
Signals can be either their signal name or number. The case is not significant when giving a signal name. A signal name
SIG or not. For a signal number, you can preface the number with
-, but both are ignored. A negative number is the same as its corresponding positive number.
handle for descriptions of the settable fields shown.