1 files changed, 16 insertions, 0 deletions
diff --git a/Library/Homebrew/cask/lib/hbc/cli/update.rb b/Library/Homebrew/cask/lib/hbc/cli/update.rb
new file mode 100644
index 000000000..ceb947544
--- /dev/null
+++ b/Library/Homebrew/cask/lib/hbc/cli/update.rb
@@ -0,0 +1,16 @@
+class Hbc::CLI::Update < Hbc::CLI::Base
+  def self.run(*_ignored)
+    result = Hbc::SystemCommand.run(Hbc.homebrew_executable,
+                                    args: %w[update])
+    # TODO: separating stderr/stdout is undesirable here.
+    #       Hbc::SystemCommand should have an option for plain
+    #       unbuffered output.
+    print result.stdout
+    $stderr.print result.stderr
+    exit result.exit_status
+  end
+
+  def self.help
+    "a synonym for 'brew update'"
+  end
+end