[RFE]: fail2ban-client unban should print what it unbanned

[mgrant0]

Feature request type

fail2ban-client unban should print what it unbanned.

Description

Currently, fail2ban-client unban 1.2.3.4 prints the number of ip addresses it unbanned. If 1.2.3.4 is currently banned, it prints 1, otherwise 0. If you call it with a netmask like 1.2.3.0/24, and multiple addresses are banned in that subnet, it returns the number of addresses it unbanned.

It would be more useful if fail2ban-client would print out the addresses it unbanned similar to fail2ban-client banned. Note that fail2ban-client banned on it's own tells me the jail and ip address, but if run as fail2ban-client banned 1.2.3.4, it tells me which jails this ip address are in. But it doesn't tell me which ip addresses are banned within a netmask, as in 1.2.0.0/16. (It would be nice it if did that!)

Considered alternatives

I considered writing some wrapper script to do this but it seems like it's going to be easier to do this within fail2ban-client.

Any additional information

If you are worried about backwards compatibility that someone might have used the output number, then, create a new client function like fail2ban-client unbanip which returns the list of ip addrs it unbanned, a list of the jain and the addrs it unbanned similar to fail2ban-client banned.

Lastly, it would be intuitive if the output of such a thing could then be fed back to fail2ban-client to re-ban, or to ban something on another host.