From 71929e0f9d58a705651f2e9d13dad6f1f1fb67ce Mon Sep 17 00:00:00 2001
From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Fri, 17 Jun 2016 19:07:30 +0800
Subject: [PATCH] Fix ps argument manual

Argument of "ps options" for ps command is a optional parameter.
Should use [] instead of <> in manual.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
---
 man/runc-ps.8.md | 2 +-
 ps.go            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/man/runc-ps.8.md b/man/runc-ps.8.md
index 82ca2588..694990a9 100644
--- a/man/runc-ps.8.md
+++ b/man/runc-ps.8.md
@@ -2,7 +2,7 @@
    runc ps - ps displays the processes running inside a container
 
 # SYNOPSIS
-   runc ps [command options] <container-id> <ps options>
+   runc ps [command options] <container-id> [ps options]
 
 # OPTIONS
    --format value, -f value     select one of: table(default) or json
diff --git a/ps.go b/ps.go
index 1aa2bc9c..3b462a0a 100644
--- a/ps.go
+++ b/ps.go
@@ -16,7 +16,7 @@ import (
 var psCommand = cli.Command{
 	Name:      "ps",
 	Usage:     "ps displays the processes running inside a container",
-	ArgsUsage: `<container-id> <ps options>`,
+	ArgsUsage: `<container-id> [ps options]`,
 	Flags: []cli.Flag{
 		cli.StringFlag{
 			Name:  "format, f",