X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/080c940d7a8134a6e277a53b7e45eb27e2b2c87f..b96728249db70975be33bb5c5721ec5b8a0eb3ff:/lib/cmd/cmd.go

diff --git a/lib/cmd/cmd.go b/lib/cmd/cmd.go
index 8c65cf7acf..24b69f0cc5 100644
--- a/lib/cmd/cmd.go
+++ b/lib/cmd/cmd.go
@@ -28,16 +28,24 @@ func (f HandlerFunc) RunCommand(prog string, args []string, stdin io.Reader, std
 	return f(prog, args, stdin, stdout, stderr)
 }
 
-type Version string
+// Version is a Handler that prints the package version (set at build
+// time using -ldflags) and Go runtime version to stdout, and returns
+// 0.
+var Version versionCommand
 
-func (v Version) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
+var version = "dev"
+
+type versionCommand struct{}
+
+func (versionCommand) RunCommand(prog string, args []string, stdin io.Reader, stdout, stderr io.Writer) int {
 	prog = regexp.MustCompile(` -*version$`).ReplaceAllLiteralString(prog, "")
-	fmt.Fprintf(stdout, "%s %s (%s)\n", prog, v, runtime.Version())
+	fmt.Fprintf(stdout, "%s %s (%s)\n", prog, version, runtime.Version())
 	return 0
 }
 
-// Multi is a Handler that looks up its first argument in a map, and
-// invokes the resulting Handler with the remaining args.
+// Multi is a Handler that looks up its first argument in a map (after
+// stripping any "arvados-" or "crunch-" prefix), and invokes the
+// resulting Handler with the remaining args.
 //
 // Example:
 //