Launch ssh agent on bash startup on Windows for CMDR/Git Bash

launch ssh agent

# Start the ssh-agent
SSH_ENV=${HOME}/.ssh/agent.env

function start_agent {
  echo "Initializing new SSH agent..."
  # Spawning the ssh-agent
  /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
  echo "Succeeded"
  chmod 600 "${SSH_ENV}"
  . "${SSH_ENV}" > /dev/null
  /usr/bin/ssh-add
}

if [ -f "${SSH_ENV}" ]; then
  . "${SSH_ENV}" > /dev/null
  kill -0 "${SSH_AGENT_PID}" 2>/dev/null || {
    start_agent;
  }
else
  start_agent;
fi