cmd/uplink: improve usage for uplink subcommands

Positional args were missing from the usage strings.

Change-Id: I8458739577ff8d2b1c0503303023569da3d32806

cmd/uplink/cmd/cat.go

@@ -14,7 +14,7 @@ import (
 
 func init() {
 	addCmd(&cobra.Command{
-		Use:   "cat",
+		Use:   "cat sj://BUCKET/KEY",
 		Short: "Copies a Storj object to standard out",
 		RunE:  catMain,
 	}, RootCmd)

cmd/uplink/cmd/cp.go

@@ -30,7 +30,7 @@ var (
 
 func init() {
 	cpCmd := addCmd(&cobra.Command{
-		Use:   "cp",
+		Use:   "cp SOURCE DESTINATION",
 		Short: "Copies a local file or Storj object to another location locally or in Storj",
 		RunE:  copyMain,
 	}, RootCmd)

cmd/uplink/cmd/ls.go

@@ -23,7 +23,7 @@ var (
 
 func init() {
 	lsCmd := addCmd(&cobra.Command{
-		Use:   "ls",
+		Use:   "ls [sj://BUCKET[/PREFIX]]",
 		Short: "List objects and prefixes or all buckets",
 		RunE:  list,
 	}, RootCmd)

cmd/uplink/cmd/mb.go

@@ -18,7 +18,7 @@ import (
 
 func init() {
 	addCmd(&cobra.Command{
-		Use:   "mb",
+		Use:   "mb sj://BUCKET",
 		Short: "Create a new bucket",
 		RunE:  makeBucket,
 	}, RootCmd)

cmd/uplink/cmd/put.go

@@ -14,7 +14,7 @@ import (
 
 func init() {
 	addCmd(&cobra.Command{
-		Use:   "put",
+		Use:   "put sj://BUCKET/KEY",
 		Short: "Copies data from standard in to a Storj object",
 		RunE:  putMain,
 	}, RootCmd)

cmd/uplink/cmd/rb.go

@@ -15,7 +15,7 @@ import (
 
 func init() {
 	addCmd(&cobra.Command{
-		Use:   "rb",
+		Use:   "rb sj://BUCKET",
 		Short: "Remove an empty bucket",
 		RunE:  deleteBucket,
 	}, RootCmd)

cmd/uplink/cmd/rm.go

@@ -20,7 +20,7 @@ var (
 
 func init() {
 	rmCmd := addCmd(&cobra.Command{
-		Use:   "rm",
+		Use:   "rm sj://BUCKET/KEY",
 		Short: "Delete an object",
 		RunE:  deleteObject,
 	}, RootCmd)

cmd/uplink/cmd/share.go

@@ -41,7 +41,7 @@ func init() {
 	// above, and addCmd adds a whole lot more than we want.
 
 	shareCmd := &cobra.Command{
-		Use:   "share [allowed-path-prefix]...",
+		Use:   "share [ALLOWED_PATH_PREFIX]...",
 		Short: "Shares restricted access to objects.",
 		RunE:  shareMain,
 	}