go fmt and fix some typo

weed/command/backup.go

@@ -38,7 +38,7 @@ var cmdBackup = &Command{
 	This will help to backup future new volumes.
 	
 	Usually backing up is just copying the .dat (and .idx) files.
-	But it's tricky to incremententally copy the differences.
+	But it's tricky to incrementally copy the differences.
 	
 	The complexity comes when there are multiple addition, deletion and compaction.
 	This tool will handle them correctly and efficiently, avoiding unnecessary data transporation.

weed/command/benchmark.go

@@ -45,7 +45,7 @@ var (
 )
 
 func init() {
-	cmdBenchmark.Run = runbenchmark // break init cycle
+	cmdBenchmark.Run = runBenchmark // break init cycle
 	cmdBenchmark.IsDebug = cmdBenchmark.Flag.Bool("debug", false, "verbose debug information")
 	b.masters = cmdBenchmark.Flag.String("master", "localhost:9333", "SeaweedFS master location")
 	b.concurrency = cmdBenchmark.Flag.Int("c", 16, "number of concurrent write or read processes")
@@ -101,7 +101,7 @@ var (
 	readStats  *stats
 )
 
-func runbenchmark(cmd *Command, args []string) bool {
+func runBenchmark(cmd *Command, args []string) bool {
 	fmt.Printf("This is SeaweedFS version %s %s %s\n", util.VERSION, runtime.GOOS, runtime.GOARCH)
 	if *b.maxCpu < 1 {
 		*b.maxCpu = runtime.NumCPU()
@@ -121,17 +121,17 @@ func runbenchmark(cmd *Command, args []string) bool {
 	masterClient.WaitUntilConnected()
 
 	if *b.write {
-		bench_write()
+		benchWrite()
 	}
 
 	if *b.read {
-		bench_read()
+		benchRead()
 	}
 
 	return true
 }
 
-func bench_write() {
+func benchWrite() {
 	fileIdLineChan := make(chan string)
 	finishChan := make(chan bool)
 	writeStats = newStats(*b.concurrency)
@@ -158,7 +158,7 @@ func bench_write() {
 	writeStats.printStats()
 }
 
-func bench_read() {
+func benchRead() {
 	fileIdLineChan := make(chan string)
 	finishChan := make(chan bool)
 	readStats = newStats(*b.concurrency)

weed/command/filer_copy.go

@@ -315,7 +315,7 @@ func uploadFileInChunks(filerAddress, filerGrpcAddress string, urlFolder string,
 
 func detectMimeType(f *os.File) string {
 	head := make([]byte, 512)
-	f.Seek(0, 0)
+	f.Seek(0, io.SeekStart)
 	n, err := f.Read(head)
 	if err == io.EOF {
 		return ""
@@ -324,7 +324,7 @@ func detectMimeType(f *os.File) string {
 		fmt.Printf("read head of %v: %v\n", f.Name(), err)
 		return "application/octet-stream"
 	}
-	f.Seek(0, 0)
+	f.Seek(0, io.SeekStart)
 	mimeType := http.DetectContentType(head[:n])
 	return mimeType
 }

weed/command/filer_export.go

@@ -14,7 +14,7 @@ func init() {
 }
 
 var cmdFilerExport = &Command{
-	UsageLine: "filer.export -sourceStore=mysql -targetStroe=cassandra",
+	UsageLine: "filer.export -sourceStore=mysql -targetStore=cassandra",
 	Short:     "export meta data in filer store",
 	Long: `Iterate the file tree and export all metadata out