From 93c87d28f6825e16c7ef84e23e77ff072382c9e6 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@gmail.com>
Date: Sat, 16 May 2020 11:59:30 +0300
Subject: [PATCH] all: print `--help` output to stdout instead of stderr

This is easier to grep and pipe
---
 app/victoria-metrics/main.go | 3 +++
 app/vmagent/main.go          | 3 +++
 app/vmalert/main.go          | 2 ++
 app/vmauth/main.go           | 3 +++
 app/vmbackup/main.go         | 2 ++
 app/vmrestore/main.go        | 3 +++
 6 files changed, 16 insertions(+)

diff --git a/app/victoria-metrics/main.go b/app/victoria-metrics/main.go
index df50376f72..f15b5a49a2 100644
--- a/app/victoria-metrics/main.go
+++ b/app/victoria-metrics/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 	"net/http"
+	"os"
 	"time"
 
 	"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert"
@@ -25,6 +26,8 @@ var (
 )
 
 func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
 	envflag.Parse()
 	buildinfo.Init()
 	logger.Init()
diff --git a/app/vmagent/main.go b/app/vmagent/main.go
index adb55223e8..1c27f813a2 100644
--- a/app/vmagent/main.go
+++ b/app/vmagent/main.go
@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"os"
 	"strings"
 	"time"
 
@@ -49,6 +50,8 @@ var (
 )
 
 func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
 	envflag.Parse()
 	buildinfo.Init()
 	logger.Init()
diff --git a/app/vmalert/main.go b/app/vmalert/main.go
index b394eb6219..c64f73b367 100644
--- a/app/vmalert/main.go
+++ b/app/vmalert/main.go
@@ -58,6 +58,8 @@ absolute path to all .yaml files in root.`)
 )
 
 func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
 	envflag.Parse()
 	buildinfo.Init()
 	logger.Init()
diff --git a/app/vmauth/main.go b/app/vmauth/main.go
index 4cc9f098b1..335a527e2a 100644
--- a/app/vmauth/main.go
+++ b/app/vmauth/main.go
@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"net/http/httputil"
 	"net/url"
+	"os"
 	"time"
 
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
@@ -19,6 +20,8 @@ var (
 )
 
 func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
 	envflag.Parse()
 	buildinfo.Init()
 	logger.Init()
diff --git a/app/vmbackup/main.go b/app/vmbackup/main.go
index ed24bc38c3..1e2dcbf18c 100644
--- a/app/vmbackup/main.go
+++ b/app/vmbackup/main.go
@@ -31,6 +31,8 @@ var (
 )
 
 func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
 	flag.Usage = usage
 	envflag.Parse()
 	buildinfo.Init()
diff --git a/app/vmrestore/main.go b/app/vmrestore/main.go
index c91fdefa14..6319008f3c 100644
--- a/app/vmrestore/main.go
+++ b/app/vmrestore/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 	"fmt"
+	"os"
 
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/backup/actions"
 	"github.com/VictoriaMetrics/VictoriaMetrics/lib/backup/common"
@@ -24,6 +25,8 @@ var (
 )
 
 func main() {
+	// Write flags and help message to stdout, since it is easier to grep or pipe.
+	flag.CommandLine.SetOutput(os.Stdout)
 	flag.Usage = usage
 	envflag.Parse()
 	buildinfo.Init()