add index copy (aka reindex), fix typoe indicies to indices (#100)

pkg/cfg/config.go

@@ -22,6 +22,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"time"
 
 	"github.com/alecthomas/repr"
 	"gopkg.in/yaml.v3"
@@ -68,6 +69,13 @@ type Config struct {
 	Retention  string   // index template create: -r
 	Rollover   bool     // index template create: -R
 
+	Missing           bool          // index copy: -m
+	Sync              bool          // index copy: -S
+	RequestsPerSecond float64       // index copy: -R
+	Timeout           time.Duration // index copy: -T
+	Refresh           bool          // index copy: -r
+	SourceIndices     []string      // index copy: -s
+
 	From, To, MaxItems int      // search: flags
 	Filter             []string // search: -F
 	Path               string   // search+doc sh: -p
@@ -98,9 +106,10 @@ type Config struct {
 	Hidden          bool   // ds ls: -H
 
 	// rollover
-	MaxAge                              string
-	MaxDocs, MaxShardSize, MaxShardDocs int  // roll over
-	DryRun                              bool // rollover: -n
+	MaxAge                     string
+	MaxDocs                    int64 // roll over, plus others
+	MaxShardSize, MaxShardDocs int   // roll over
+	DryRun                     bool  // rollover: -n
 
 	Tag      string // api ls: -t
 	HumanCat bool   // api repl: -H