Add --version flag

This allows to identify the version of a Ceres executable build.

1 files changed, 7 insertions, 4 deletions

diff --git a/flags.go b/flags.go
index e7ff85e..862cffa 100644
--- a/flags.go
+++ b/flags.go
@@ -7,15 +7,18 @@ import (
 
 const help = `Ceres - Recipe server for local networks
 
-Usage: ceres [-h | --help]
+Usage: ceres [-h | --help] [-v | --version]
 
   -h, --help                 show this help page and exit
+  -v, --version              print version information
 `
 
-func parseFlags() {
+var printVersion bool
+
+func init() {
+	flag.BoolVar(&printVersion, "version", false, "print version information")
+	flag.BoolVar(&printVersion, "v", false, "print version information")
 	flag.Usage = func() {
 		fmt.Fprintf(flag.CommandLine.Output(), help)
 	}
-
-	flag.Parse()
 }