Simple way to run client/server autotest(s) from server

src/scripts/remote_access.sh

+# Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Library for setting up remote access and running remote commands.
+
+DEFAULT_PRIVATE_KEY="$SRC_ROOT/platform/testing/testing_rsa"
+
+DEFINE_string remote "" "remote hostname/IP of running Chromium OS instance"
+DEFINE_string private_key "$DEFAULT_PRIVATE_KEY" \
+  "Private key of root account on remote host"
+
+function remote_sh() {
+  # Disable strict host checking so that we don't prompt the user when
+  # the host key file is removed and just go ahead and add it.
+  REMOTE_OUT=$(ssh -o StrictHostKeyChecking=no -o \
+    UserKnownHostsFile=$TMP_KNOWN_HOSTS root@$FLAGS_remote "$@")
+  return ${PIPESTATUS[0]}
+}
+
+function remote_sh_allow_changed_host_key() {
+  rm -f $TMP_KNOWN_HOSTS
+  remote_sh "$@"
+}
+
+function set_up_remote_access() {
+  if [ -z "$SSH_AGENT_PID" ]; then
+    eval `ssh-agent`
+  fi
+  cp $FLAGS_private_key $TMP_PRIVATE_KEY
+  chmod 0400 $TMP_PRIVATE_KEY
+  ssh-add $TMP_PRIVATE_KEY
+
+  # Verify the client is reachable before continuing
+  echo "Initiating first contact with remote host"
+  remote_sh "true"
+  echo "Connection OK"
+}
+
+function remote_access_init() {
+  TMP_PRIVATE_KEY=$TMP/private_key
+  TMP_KNOWN_HOSTS=$TMP/known_hosts
+  if [ -z "$FLAGS_remote" ]; then
+    echo "Please specify --remote=<IP-or-hostname> of the Chromium OS instance"
+    exit 1
+  fi
+  set_up_remote_access
+}