How to automatically close the ssh-agent along with closing Cygwin?

Question

I am on Windows 10 Pro.

I have added the following lines to my Cygwin (fully up-to-date) ~/.bashrc file:

eval $(ssh-agent) > /dev/null
ssh-add > /dev/null 2>&1

in order for me not to have to do those each and every time as I typically don't do anything else than connect to Linux machines.

Notice, that I redirect the output of those commands to the black hole for me not really being interested in it, otherwise it would output something like:

Agent pid 11060
Identity added: /home/vlastimil/.ssh/id_rsa (/home/vlastimil/.ssh/id_rsa)

But, I noticed today, that for some reason, that those ssh-agent.exe processes remain in memory after I log out and close Cygwin.

Question is:

How to automatically close the ssh-agent along with closing Cygwin?

Answer 1

I figured, first thing to do, is in the ~/.bashrc file, I need to save the output of:

eval $(ssh-agent)

Instead of discarding it; an example follows:

eval $(ssh-agent) > ~/.ssh-agent-stdout

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Finally, create the following file:

~/.bash_logout

With contents:

ssh_agent_pid=$(awk '{ print $3 }' ~/.ssh-agent-stdout)
kill -HUP "$ssh_agent_pid"