version

cli/Makefile

+all: build
+
+build:
+	go build
+	mv cli ipfs

cli/commands.go

@@ -34,7 +34,7 @@ Use "ipfs help <command>" for more information about a command.
 `,
   Run: ipfsCmd,
   Subcommands: []*commander.Command{
-    // cmdIpfsVersion,
+    cmdIpfsVersion,
     // cmdIpfsConfig,
     cmdIpfsCommands,
   },

cli/version.go

+package main
+
+import (
+  "github.com/jbenet/commander"
+  u "github.com/jbenet/go-ipfs/util"
+)
+
+const Version = "0.1.0"
+
+var cmdIpfsVersion = &commander.Command{
+  UsageLine: "version",
+  Short:     "Show ipfs version information.",
+  Long: `ipfs version - Show ipfs version information.
+
+    Returns the current version of ipfs and exits.
+  `,
+  Run:  versionCmd,
+}
+
+func init() {
+  cmdIpfsVersion.Flag.Bool("number", false, "show only the number")
+}
+
+func versionCmd(c *commander.Command, _ []string) error {
+  number := c.Flag.Lookup("number").Value.Get().(bool)
+  if !number {
+    u.POut("ipfs version ")
+  }
+  u.POut("%s\n", Version)
+  return nil
+}