keep the uppercase letter for flag info

Signed-off-by: yulng <wei.yang@daocloud.io>

cmd/ctr/commands/tasks/checkpoint.go

@@ -35,15 +35,15 @@ var checkpointCommand = cli.Command{
 	Flags: []cli.Flag{
 		cli.BoolFlag{
 			Name:  "exit",
-			Usage: "stop the container after the checkpoint",
+			Usage: "Stop the container after the checkpoint",
 		},
 		cli.StringFlag{
 			Name:  "image-path",
-			Usage: "path to criu image files",
+			Usage: "Path to criu image files",
 		},
 		cli.StringFlag{
 			Name:  "work-path",
-			Usage: "path to criu work files and logs",
+			Usage: "Path to criu work files and logs",
 		},
 	},
 	Action: func(context *cli.Context) error {

cmd/ctr/commands/tasks/delete.go

@@ -34,11 +34,11 @@ var deleteCommand = cli.Command{
 	Flags: []cli.Flag{
 		cli.BoolFlag{
 			Name:  "force, f",
-			Usage: "force delete task process",
+			Usage: "Force delete task process",
 		},
 		cli.StringFlag{
 			Name:  "exec-id",
-			Usage: "process ID to kill",
+			Usage: "Process ID to kill",
 		},
 	},
 	Action: func(context *cli.Context) error {

cmd/ctr/commands/tasks/exec.go

@@ -39,32 +39,32 @@ var execCommand = cli.Command{
 	Flags: []cli.Flag{
 		cli.StringFlag{
 			Name:  "cwd",
-			Usage: "working directory of the new process",
+			Usage: "Working directory of the new process",
 		},
 		cli.BoolFlag{
 			Name:  "tty,t",
-			Usage: "allocate a TTY for the container",
+			Usage: "Allocate a TTY for the container",
 		},
 		cli.BoolFlag{
 			Name:  "detach,d",
-			Usage: "detach from the task after it has started execution",
+			Usage: "Detach from the task after it has started execution",
 		},
 		cli.StringFlag{
 			Name:     "exec-id",
 			Required: true,
-			Usage:    "exec specific id for the process",
+			Usage:    "Exec specific id for the process",
 		},
 		cli.StringFlag{
 			Name:  "fifo-dir",
-			Usage: "directory used for storing IO FIFOs",
+			Usage: "Directory used for storing IO FIFOs",
 		},
 		cli.StringFlag{
 			Name:  "log-uri",
-			Usage: "log uri for custom shim logging",
+			Usage: "Log uri for custom shim logging",
 		},
 		cli.StringFlag{
 			Name:  "user",
-			Usage: "user id or name",
+			Usage: "User id or name",
 		},
 	},
 	Action: func(context *cli.Context) error {

cmd/ctr/commands/tasks/kill.go

@@ -69,15 +69,15 @@ var killCommand = cli.Command{
 		cli.StringFlag{
 			Name:  "signal, s",
 			Value: "",
-			Usage: "signal to send to the container",
+			Usage: "Signal to send to the container",
 		},
 		cli.StringFlag{
 			Name:  "exec-id",
-			Usage: "process ID to kill",
+			Usage: "Process ID to kill",
 		},
 		cli.BoolFlag{
 			Name:  "all, a",
-			Usage: "send signal to all processes inside the container",
+			Usage: "Send signal to all processes inside the container",
 		},
 	},
 	Action: func(context *cli.Context) error {

cmd/ctr/commands/tasks/list.go

@@ -34,7 +34,7 @@ var listCommand = cli.Command{
 	Flags: []cli.Flag{
 		cli.BoolFlag{
 			Name:  "quiet, q",
-			Usage: "print only the task id",
+			Usage: "Print only the task id",
 		},
 	},
 	Action: func(context *cli.Context) error {

cmd/ctr/commands/tasks/start.go

@@ -34,23 +34,23 @@ var startCommand = cli.Command{
 	Flags: append(platformStartFlags, []cli.Flag{
 		cli.BoolFlag{
 			Name:  "null-io",
-			Usage: "send all IO to /dev/null",
+			Usage: "Send all IO to /dev/null",
 		},
 		cli.StringFlag{
 			Name:  "log-uri",
-			Usage: "log uri",
+			Usage: "Log uri",
 		},
 		cli.StringFlag{
 			Name:  "fifo-dir",
-			Usage: "directory used for storing IO FIFOs",
+			Usage: "Directory used for storing IO FIFOs",
 		},
 		cli.StringFlag{
 			Name:  "pid-file",
-			Usage: "file path to write the task's pid",
+			Usage: "File path to write the task's pid",
 		},
 		cli.BoolFlag{
 			Name:  "detach,d",
-			Usage: "detach from the task after it has started execution",
+			Usage: "Detach from the task after it has started execution",
 		},
 	}...),
 	Action: func(context *cli.Context) error {

cmd/ctr/commands/tasks/tasks_unix.go

@@ -36,7 +36,7 @@ import (
 var platformStartFlags = []cli.Flag{
 	cli.BoolFlag{
 		Name:  "no-pivot",
-		Usage: "disable use of pivot-root (linux only)",
+		Usage: "Disable use of pivot-root (linux only)",
 	},
 }