Bridge Windows 10 buildin OpenSSH agent to cygwin using socat and putty plink

sshagent-bridge

#!/bin/sh
SOCKDIR=`mktemp.exe -d /tmp/ssh-XXXXXXXXX`

SSH_AUTH_SOCK=$SOCKDIR/agent.$$;export SSH_AUTH_SOCK;
[ -z ${1+x} ] && echo "SSH_AUTH_SOCK=$SSH_AUTH_SOCK;export SSH_AUTH_SOCK;"

socat UNIX-LISTEN:$SSH_AUTH_SOCK,umask=066,fork EXEC:"PLINK.EXE -serial //./pipe/openssh-ssh-agent",pipes &

SSH_AGENT_PID=$!; export SSH_AGENT_PID;

if [ -z ${1+x} ]; then
        (tail --pid $SSH_AGENT_PID -f /dev/null; rm -r $SOCKDIR) &
        echo "SSH_AGENT_PID=$SSH_AGENT_PID; export SSH_AGENT_PID;"
        echo "echo Agent pid $SSH_AGENT_PID;"
else
        (tail --pid $$ -f /dev/null; kill $SSH_AGENT_PID; rm -r $SOCKDIR) &
        exec $*;
fi