[skip changelog] Fix typos in command line help text

cli/board/board.go

@@ -30,7 +30,7 @@ func NewCommand() *cobra.Command {
 		Example: "  # Lists all connected boards.\n" +
 			"  " + os.Args[0] + " board list\n\n" +
 			"  # Attaches a sketch to a board.\n" +
-			"  " + os.Args[0] + " board attach serial:///dev/tty/ACM0 mySketch",
+			"  " + os.Args[0] + " board attach serial:///dev/ttyACM0 mySketch",
 	}
 
 	boardCommand.AddCommand(initAttachCommand())

cli/board/list.go

@@ -35,7 +35,7 @@ func initListCommand() *cobra.Command {
 	listCommand := &cobra.Command{
 		Use:     "list",
 		Short:   "List connected boards.",
-		Long:    "Detects and displays a list of connected boards to the current computer.",
+		Long:    "Detects and displays a list of boards connected to the current computer.",
 		Example: "  " + os.Args[0] + " board list --timeout 10s",
 		Args:    cobra.NoArgs,
 		Run:     runListCommand,

cli/cli.go

@@ -83,7 +83,7 @@ func createCliCommandTree(cmd *cobra.Command) {
 	cmd.AddCommand(version.NewCommand())
 
 	cmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "Print the logs on the standard output.")
-	cmd.PersistentFlags().String("log-level", "", "Messages with this level and above will be logged. Valid levels are: Trace, Debug, Info, Warning, Error, Fatal, Panic")
+	cmd.PersistentFlags().String("log-level", "", "Messages with this level and above will be logged. Valid levels are: trace, debug, info, warn, error, fatal, panic")
 	viper.BindPFlag("logging.level", cmd.PersistentFlags().Lookup("log-level"))
 	cmd.PersistentFlags().String("log-file", "", "Path to the file where logs will be written.")
 	viper.BindPFlag("logging.file", cmd.PersistentFlags().Lookup("log-file"))

cli/compile/compile.go

@@ -76,11 +76,11 @@ func NewCommand() *cobra.Command {
 	command.Flags().StringVar(&warnings, "warnings", "none",
 		`Optional, can be "none", "default", "more" and "all". Defaults to "none". Used to tell gcc which warning level to use (-W flag).`)
 	command.Flags().BoolVarP(&verbose, "verbose", "v", false, "Optional, turns on verbose mode.")
-	command.Flags().BoolVar(&quiet, "quiet", false, "Optional, supresses almost every output.")
+	command.Flags().BoolVar(&quiet, "quiet", false, "Optional, suppresses almost every output.")
 	command.Flags().BoolVarP(&uploadAfterCompile, "upload", "u", false, "Upload the binary after the compilation.")
 	command.Flags().StringVarP(&port, "port", "p", "", "Upload port, e.g.: COM10 or /dev/ttyACM0")
 	command.Flags().BoolVarP(&verify, "verify", "t", false, "Verify uploaded binary after the upload.")
-	command.Flags().StringVar(&vidPid, "vid-pid", "", "When specified, VID/PID specific build properties are used, if boards supports them.")
+	command.Flags().StringVar(&vidPid, "vid-pid", "", "When specified, VID/PID specific build properties are used, if board supports them.")
 	command.Flags().StringSliceVar(&libraries, "libraries", []string{},
 		"List of custom libraries paths separated by commas. Or can be used multiple times for multiple libraries paths.")
 	command.Flags().BoolVar(&optimizeForDebug, "optimize-for-debug", false, "Optional, optimize compile output for debug, not for release.")

cli/config/config.go

@@ -25,7 +25,7 @@ import (
 func NewCommand() *cobra.Command {
 	configCommand := &cobra.Command{
 		Use:     "config",
-		Short:   "Arduino Configuration Commands.",
+		Short:   "Arduino configuration commands.",
 		Example: "  " + os.Args[0] + " config init",
 	}
 

cli/core/core.go

@@ -25,8 +25,8 @@ import (
 func NewCommand() *cobra.Command {
 	coreCommand := &cobra.Command{
 		Use:     "core",
-		Short:   "Arduino Core operations.",
-		Long:    "Arduino Core operations.",
+		Short:   "Arduino core operations.",
+		Long:    "Arduino core operations.",
 		Example: "  " + os.Args[0] + " core update-index",
 	}
 

cli/core/download.go

@@ -32,12 +32,12 @@ import (
 
 func initDownloadCommand() *cobra.Command {
 	downloadCommand := &cobra.Command{
-		Use:   "download [PACKAGER:ARCH[=VERSION]](S)",
+		Use:   "download [PACKAGER:ARCH[@VERSION]](S)",
 		Short: "Downloads one or more cores and corresponding tool dependencies.",
 		Long:  "Downloads one or more cores and corresponding tool dependencies.",
 		Example: "" +
-			"  " + os.Args[0] + " core download arduino:samd       # to download the latest version of arduino SAMD core.\n" +
-			"  " + os.Args[0] + " core download arduino:samd=1.6.9 # for a specific version (in this case 1.6.9).",
+			"  " + os.Args[0] + " core download arduino:samd       # to download the latest version of Arduino SAMD core.\n" +
+			"  " + os.Args[0] + " core download arduino:samd@1.6.9 # for a specific version (in this case 1.6.9).",
 		Args: cobra.MinimumNArgs(1),
 		Run:  runDownloadCommand,
 	}

cli/core/install.go

@@ -35,7 +35,7 @@ func initInstallCommand() *cobra.Command {
 		Use:   "install PACKAGER:ARCH[@VERSION] ...",
 		Short: "Installs one or more cores and corresponding tool dependencies.",
 		Long:  "Installs one or more cores and corresponding tool dependencies.",
-		Example: "  # download the latest version of arduino SAMD core.\n" +
+		Example: "  # download the latest version of Arduino SAMD core.\n" +
 			"  " + os.Args[0] + " core install arduino:samd\n\n" +
 			"  # download a specific version (in this case 1.6.9).\n" +
 			"  " + os.Args[0] + " core install arduino:[email protected]",

cli/core/uninstall.go

@@ -33,8 +33,8 @@ import (
 func initUninstallCommand() *cobra.Command {
 	return &cobra.Command{
 		Use:     "uninstall PACKAGER:ARCH ...",
-		Short:   "Uninstalls one or more cores and corresponding tool dependencies if no more used.",
-		Long:    "Uninstalls one or more cores and corresponding tool dependencies if no more used.",
+		Short:   "Uninstalls one or more cores and corresponding tool dependencies if no longer used.",
+		Long:    "Uninstalls one or more cores and corresponding tool dependencies if no longer used.",
 		Example: "  " + os.Args[0] + " core uninstall arduino:samd\n",
 		Args:    cobra.MinimumNArgs(1),
 		Run:     runUninstallCommand,

cli/sketch/sketch.go

@@ -25,8 +25,8 @@ import (
 func NewCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "sketch",
-		Short:   "Arduino CLI Sketch Commands.",
-		Long:    "Arduino CLI Sketch Commands.",
+		Short:   "Arduino CLI sketch commands.",
+		Long:    "Arduino CLI sketch commands.",
 		Example: "  " + os.Args[0] + " sketch new MySketch",
 	}
 

cli/version/version.go

@@ -27,8 +27,8 @@ import (
 func NewCommand() *cobra.Command {
 	return &cobra.Command{
 		Use:     "version",
-		Short:   "Shows version number of arduino CLI.",
-		Long:    "Shows version number of arduino CLI which is installed on your system.",
+		Short:   "Shows version number of Arduino CLI.",
+		Long:    "Shows the version number of Arduino CLI which is installed on your system.",
 		Example: "  " + os.Args[0] + " version",
 		Args:    cobra.NoArgs,
 		Run:     run,