Ability to clear authorized_keys file

README.md

@@ -72,3 +72,7 @@ Remove key
     ./bin/gitlab-keys rm-key key-23 "ssh-rsa AAAAx321..."
+Remoev all keys from authorized_keys file
+
+    ./bin/gitlab-keys clear
+

bin/gitlab-keys

@@ -10,6 +10,8 @@ require_relative '../lib/gitlab_init'
 #
 #   /bin/gitlab-keys rm-key key-23 "ssh-rsa AAAAx321..."
 #
+#   /bin/gitlab-keys clear"
+#
 require File.join(ROOT_PATH, 'lib', 'gitlab_keys')

lib/gitlab_keys.rb

@@ -17,6 +17,7 @@ class GitlabKeys
     case @command
     when 'add-key'; add_key
     when 'rm-key';  rm_key
+    when 'clear';  clear
     else
       $logger.warn "Attempt to execute invalid gitlab-keys command #{@command.inspect}."
       puts 'not allowed'
@@ -38,4 +39,8 @@ class GitlabKeys
     cmd = "sed -i '/shell #{@key_id}\"/d' #{auth_file}"
     system(cmd)
   end
+
+  def clear
+    system("echo '# Managed by gitlab-shell' > #{auth_file}")
+  end
 end