Merge pull request #1485 from chef/tc/add-version-command

Added chef-server-ctl version functionality

omnibus/files/private-chef-ctl-commands/version.rb

@@ -0,0 +1,35 @@
+#
+# Copyright:: Copyright (c) 2018 Chef Software, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+require 'json'
+
+add_command_under_category "version", "general", "Display current version of Chef Server.", 2 do
+
+  begin
+    # detect if running as a habitat service
+    if File.exist?('/hab/svc/chef-server-ctl/PID')
+      ident_file = File.read('../IDENT')
+      version = "chef-server #{ident_file.split('/')[2]}"
+    else
+      version = JSON.parse(File.read('/opt/opscode/version-manifest.json'))['build_version']
+    end
+
+    puts version
+  rescue Errno::ENOENT => e
+    puts "Error determining version!"
+    puts "#{e.message}"
+    exit(1)
+  end
+
+end