diff --git a/cli/cli.go b/cli/cli.go
index 0a992d9..993bf29 100644
--- a/cli/cli.go
+++ b/cli/cli.go
@@ -1498,7 +1498,7 @@ func getVersionFromFile() (string, error) {
 		return "", fmtc.Errorf("Can't read version file: %v", err)
 	}
 
-	versionName := strings.Trim(string(versionData[:]), " \n\r")
+	versionName := strings.Trim(string(versionData), " \n\r")
 
 	if versionName == "" {
 		return "", fmtc.Errorf("Can't use version file - file malformed")
@@ -1731,7 +1731,7 @@ func isVersionSupportedByBundler(rubyVersion string) bool {
 
 // getNameWithoutPatchLevel return name without -p0
 func getNameWithoutPatchLevel(name string) string {
-	return strings.Replace(name, "-p0", "", -1)
+	return strings.ReplaceAll(name, "-p0", "")
 }
 
 // parseGemInfo extract name and version of gem
@@ -1800,11 +1800,11 @@ func printCompletion() int {
 
 	switch options.GetS(OPT_COMPLETION) {
 	case "bash":
-		fmt.Printf(bash.Generate(info, "rbinstall"))
+		fmt.Print(bash.Generate(info, "rbinstall"))
 	case "fish":
-		fmt.Printf(fish.Generate(info, "rbinstall"))
+		fmt.Print(fish.Generate(info, "rbinstall"))
 	case "zsh":
-		fmt.Printf(zsh.Generate(info, optMap, "rbinstall"))
+		fmt.Print(zsh.Generate(info, optMap, "rbinstall"))
 	default:
 		return 1
 	}
diff --git a/clone/clone.go b/clone/clone.go
index 8ce8e83..eddf655 100644
--- a/clone/clone.go
+++ b/clone/clone.go
@@ -500,11 +500,11 @@ func printCompletion() int {
 
 	switch options.GetS(OPT_COMPLETION) {
 	case "bash":
-		fmt.Printf(bash.Generate(info, "rbinstall-clone"))
+		fmt.Print(bash.Generate(info, "rbinstall-clone"))
 	case "fish":
-		fmt.Printf(fish.Generate(info, "rbinstall-clone"))
+		fmt.Print(fish.Generate(info, "rbinstall-clone"))
 	case "zsh":
-		fmt.Printf(zsh.Generate(info, optMap, "rbinstall-clone"))
+		fmt.Print(zsh.Generate(info, optMap, "rbinstall-clone"))
 	default:
 		return 1
 	}
diff --git a/common/rbinstall.spec b/common/rbinstall.spec
index 33f3311..748577b 100644
--- a/common/rbinstall.spec
+++ b/common/rbinstall.spec
@@ -10,7 +10,7 @@
 
 Summary:        Utility for installing prebuilt Ruby to rbenv
 Name:           rbinstall
-Version:        3.1.1
+Version:        3.1.2
 Release:        0%{?dist}
 Group:          Applications/System
 License:        Apache License, Version 2.0
@@ -38,7 +38,7 @@ Utility for installing different prebuilt versions of Ruby to rbenv.
 %package gen
 
 Summary:  Utility for generating RBInstall index
-Version:  3.0.4
+Version:  3.1.0
 Release:  0%{?dist}
 Group:    Development/Tools
 
@@ -50,7 +50,7 @@ Utility for generating RBInstall index.
 %package clone
 
 Summary:  Utility for cloning RBInstall repository
-Version:  3.0.4
+Version:  3.0.5
 Release:  0%{?dist}
 Group:    Development/Tools
 
@@ -118,6 +118,12 @@ rm -rf %{buildroot}
 ################################################################################
 
 %changelog
+* Tue Oct 17 2023 Anton Novojilov <andy@essentialkaos.com> - 3.1.2-0
+- [gen] Improved alias and eol info handling
+- [cli|gen|clone] Improve verbose version info
+- [cli|gen|clone] Code refactoring
+- Dependencies update
+
 * Tue Oct 03 2023 Anton Novojilov <andy@essentialkaos.com> - 3.1.1-0
 - [gen] Fixed bug with searching base version
 - Dependencies update
diff --git a/gen/gen.go b/gen/gen.go
index a6bf208..5d4ee5a 100644
--- a/gen/gen.go
+++ b/gen/gen.go
@@ -40,7 +40,7 @@ import (
 // App info
 const (
 	APP  = "RBInstall Gen"
-	VER  = "3.0.4"
+	VER  = "3.1.0"
 	DESC = "Utility for generating RBInstall index"
 )
 
@@ -80,10 +80,7 @@ type fileInfoSlice []FileInfo
 func (s fileInfoSlice) Len() int      { return len(s) }
 func (s fileInfoSlice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
 func (s fileInfoSlice) Less(i, j int) bool {
-	return sortutil.VersionCompare(
-		fmtVersionName(s[i].File),
-		fmtVersionName(s[j].File),
-	)
+	return sortutil.VersionCompare(fmtVersionName(s[i].File), fmtVersionName(s[j].File))
 }
 
 // ////////////////////////////////////////////////////////////////////////////////// //
@@ -93,8 +90,8 @@ var aliasInfo map[string]string
 
 var optMap = options.Map{
 	OPT_OUTPUT:   {Value: INDEX_NAME},
-	OPT_EOL:      {},
-	OPT_ALIAS:    {},
+	OPT_EOL:      {Value: "eol.json"},
+	OPT_ALIAS:    {Value: "alias.json"},
 	OPT_NO_COLOR: {Type: options.BOOL},
 	OPT_HELP:     {Type: options.BOOL, Alias: "u:usage"},
 	OPT_VER:      {Type: options.BOOL, Alias: "ver"},
@@ -190,18 +187,20 @@ func configureUI() {
 	}
 }
 
-// loadEOLInfo load EOL info from file
+// loadEOLInfo loads EOL info from file
 func loadEOLInfo() {
 	eolInfo = make(map[string]bool)
 
-	if !options.Has(OPT_EOL) {
-		return
+	if !fsutil.CheckPerms("FRS", options.GetS(OPT_EOL)) {
+		if !options.Has(OPT_EOL) {
+			return
+		}
 	}
 
 	err := jsonutil.Read(options.GetS(OPT_EOL), &eolInfo)
 
 	if err != nil {
-		printErrorAndExit(err.Error())
+		printErrorAndExit("Can't read EOL data: %v", err)
 	}
 }
 
@@ -209,14 +208,16 @@ func loadEOLInfo() {
 func loadAliasInfo() {
 	aliasInfo = make(map[string]string)
 
-	if !options.Has(OPT_ALIAS) {
-		return
+	if !fsutil.CheckPerms("FRS", options.GetS(OPT_ALIAS)) {
+		if !options.Has(OPT_ALIAS) {
+			return
+		}
 	}
 
 	err := jsonutil.Read(options.GetS(OPT_ALIAS), &aliasInfo)
 
 	if err != nil {
-		printErrorAndExit(err.Error())
+		printErrorAndExit("Can't read alias data: %v", err)
 	}
 }
 
@@ -268,7 +269,7 @@ func buildIndex(dataDir string) {
 		alreadyExist := false
 
 		filePath := path.Join(dataDir, fileInfo.OS, fileInfo.Arch, fileInfo.File)
-		fileName := strings.Replace(fileInfo.File, ".tzst", "", -1)
+		fileName := strutil.Exclude(fileInfo.File, ".tzst")
 		fileSize := fsutil.GetSize(filePath)
 		fileAdded, _ := fsutil.GetCTime(filePath)
 
@@ -330,6 +331,10 @@ func buildIndex(dataDir string) {
 	}
 
 	printIndexStats(newIndex)
+	printExtraInfo()
+
+	fmtutil.Separator(false)
+
 	saveIndex(outputFile, newIndex)
 
 	fmtc.Printf(
@@ -415,8 +420,28 @@ func printIndexStats(i *index.Index) {
 		fmtutil.PrettyNum(i.Meta.Items),
 		fmtutil.PrettySize(i.Meta.Size, " "),
 	)
+}
 
-	fmtutil.Separator(false)
+// printExtraInfo prints info about used alias/eol data
+func printExtraInfo() {
+	fmtutil.Separator(false, "EXTRA")
+
+	eolModTime, _ := fsutil.GetMTime(options.GetS(OPT_EOL))
+	aliasModTime, _ := fsutil.GetMTime(options.GetS(OPT_ALIAS))
+
+	fmtc.If(len(eolInfo) == 0).Println("  {*}EOL:  {!} {s}—{!}")
+	fmtc.If(len(eolInfo) != 0).Printf(
+		"  {*}EOL:  {!} %s {s-}(%s){!}\n",
+		options.GetS(OPT_EOL),
+		timeutil.Format(eolModTime, "%Y/%m/%d %H:%M"),
+	)
+
+	fmtc.If(len(aliasInfo) == 0).Println("  {*}Alias:{!} {s}—{!}")
+	fmtc.If(len(aliasInfo) != 0).Printf(
+		"  {*}Alias:{!} %s {s-}(%s){!}\n",
+		options.GetS(OPT_ALIAS),
+		timeutil.Format(aliasModTime, "%Y/%m/%d %H:%M"),
+	)
 }
 
 // saveIndex saves index data as JSON to file
@@ -435,7 +460,7 @@ func saveIndex(outputFile string, i *index.Index) {
 	err = os.WriteFile(outputFile, indexData, 0644)
 
 	if err != nil {
-		printErrorAndExit(err.Error())
+		printErrorAndExit("Can't save index: %v", err)
 	}
 
 	os.Chmod(outputFile, 0644)
@@ -529,11 +554,11 @@ func printCompletion() int {
 
 	switch options.GetS(OPT_COMPLETION) {
 	case "bash":
-		fmt.Printf(bash.Generate(info, "rbinstall-clone"))
+		fmt.Print(bash.Generate(info, "rbinstall-clone"))
 	case "fish":
-		fmt.Printf(fish.Generate(info, "rbinstall-clone"))
+		fmt.Print(fish.Generate(info, "rbinstall-clone"))
 	case "zsh":
-		fmt.Printf(zsh.Generate(info, optMap, "rbinstall-clone"))
+		fmt.Print(zsh.Generate(info, optMap, "rbinstall-clone"))
 	default:
 		return 1
 	}
@@ -558,8 +583,8 @@ func genUsage() *usage.Info {
 	info.AppNameColorTag = "{*}" + colorTagApp
 
 	info.AddOption(OPT_OUTPUT, "Custom index output {s-}(default: index.json){!}", "file")
-	info.AddOption(OPT_EOL, "File with EOL information", "file")
-	info.AddOption(OPT_ALIAS, "File with aliases information", "file")
+	info.AddOption(OPT_EOL, "File with EOL information {s-}(default: eol.json){!}", "file")
+	info.AddOption(OPT_ALIAS, "File with aliases information {s-}(default: alias.json){!}", "file")
 	info.AddOption(OPT_NO_COLOR, "Disable colors in output")
 	info.AddOption(OPT_HELP, "Show this help message")
 	info.AddOption(OPT_VER, "Show version")
diff --git a/go.mod b/go.mod
index 26e610f..556bc10 100644
--- a/go.mod
+++ b/go.mod
@@ -4,13 +4,13 @@ go 1.18
 
 require (
 	github.com/essentialkaos/depsy v1.1.0
-	github.com/essentialkaos/ek/v12 v12.79.0
+	github.com/essentialkaos/ek/v12 v12.82.0
 	github.com/essentialkaos/npck v1.6.1
 )
 
 require (
 	github.com/essentialkaos/go-linenoise/v3 v3.4.0 // indirect
-	github.com/klauspost/compress v1.17.0 // indirect
-	golang.org/x/crypto v0.13.0 // indirect
-	golang.org/x/sys v0.12.0 // indirect
+	github.com/klauspost/compress v1.17.1 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 8b2f60c..705dc58 100644
--- a/go.sum
+++ b/go.sum
@@ -1,18 +1,18 @@
 github.com/essentialkaos/check v1.4.0 h1:kWdFxu9odCxUqo1NNFNJmguGrDHgwi3A8daXX1nkuKk=
 github.com/essentialkaos/depsy v1.1.0 h1:U6dp687UkQwXlZU17Hg2KMxbp3nfZAoZ8duaeUFYvJI=
 github.com/essentialkaos/depsy v1.1.0/go.mod h1:kpiTAV17dyByVnrbNaMcZt2jRwvuXClUYOzpyJQwtG8=
-github.com/essentialkaos/ek/v12 v12.79.0 h1:Dq/bCqk8/N5h/r5jJA2UHc1YoUEVYcc7xnR0DI5L9wA=
-github.com/essentialkaos/ek/v12 v12.79.0/go.mod h1:S9/XSKhEAdylL3PF8GAnUeKKyd92VrDGR4YGacHfz0c=
+github.com/essentialkaos/ek/v12 v12.82.0 h1:8JqG7E1RWhMJq2CuSV0oaR96pmEjngLPG3cnJ++EJeQ=
+github.com/essentialkaos/ek/v12 v12.82.0/go.mod h1:X0gkyjBCP4QiD+sV4D52aquLDLGUmHteMEL7Rsgbev0=
 github.com/essentialkaos/go-linenoise/v3 v3.4.0 h1:g72w8x+/HIwOMBVvNaPYp+wMWVHrYZwzFAF7OfZR5Ts=
 github.com/essentialkaos/go-linenoise/v3 v3.4.0/go.mod h1:t1kNLY2bSMQCy1JXOefD2BDLs/TTPMtTv3DFNV5uDSI=
 github.com/essentialkaos/npck v1.6.1 h1:cFhLRRFNbl7tBXQD2+EkzTHy6y7+oxfvwsVgbhaFvUg=
 github.com/essentialkaos/npck v1.6.1/go.mod h1:Leny9a2R4otIGqZdnrs8swhI9KvwO+Rmmn2zThpPoN4=
-github.com/klauspost/compress v1.17.0 h1:Rnbp4K9EjcDuVuHtd0dgA4qNuv9yKDYKK1ulpJwgrqM=
-github.com/klauspost/compress v1.17.0/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.17.1 h1:NE3C767s2ak2bweCZo3+rdP4U/HoyVXLv/X9f2gPS5g=
+github.com/klauspost/compress v1.17.1/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
-golang.org/x/crypto v0.13.0 h1:mvySKfSWJ+UKUii46M40LOvyWfN0s2U+46/jDd0e6Ck=
-golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
-golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
-golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/index/index.go b/index/index.go
index 7daf05f..effd966 100644
--- a/index/index.go
+++ b/index/index.go
@@ -75,8 +75,8 @@ type versionInfoSlice []*VersionInfo
 func (s versionInfoSlice) Len() int      { return len(s) }
 func (s versionInfoSlice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
 func (s versionInfoSlice) Less(i, j int) bool {
-	iv := strings.Replace(s[i].Name, "-", ".", -1)
-	jv := strings.Replace(s[j].Name, "-", ".", -1)
+	iv := strings.ReplaceAll(s[i].Name, "-", ".")
+	jv := strings.ReplaceAll(s[j].Name, "-", ".")
 
 	return sortutil.VersionCompare(iv, jv)
 }
@@ -86,7 +86,7 @@ func (s versionInfoSlice) Less(i, j int) bool {
 // NewIndex return pointer to new index struct
 func NewIndex() *Index {
 	return &Index{
-		UUID: uuid.GenUUID(),
+		UUID: uuid.UUID4().String(),
 		Meta: &Metadata{},
 		Data: make(map[string]DistData),
 	}
diff --git a/support/support.go b/support/support.go
index 9374af0..7ebfd40 100644
--- a/support/support.go
+++ b/support/support.go
@@ -118,7 +118,7 @@ func getHashColorBullet(v string) string {
 
 // printInfo formats and prints info record
 func printInfo(size int, name, value string) {
-	name = name + ":"
+	name += ":"
 	size++
 
 	if value == "" {
diff --git a/support/support_linux.go b/support/support_linux.go
index 08ec75d..9068a93 100644
--- a/support/support_linux.go
+++ b/support/support_linux.go
@@ -15,6 +15,7 @@ import (
 	"github.com/essentialkaos/ek/v12/fmtutil"
 	"github.com/essentialkaos/ek/v12/fsutil"
 	"github.com/essentialkaos/ek/v12/system"
+	"github.com/essentialkaos/ek/v12/system/container"
 )
 
 // ////////////////////////////////////////////////////////////////////////////////// //
@@ -26,13 +27,14 @@ func showOSInfo() {
 	if err == nil {
 		fmtutil.Separator(false, "OS INFO")
 
-		printInfo(12, "Name", osInfo.Name)
-		printInfo(12, "Pretty Name", osInfo.PrettyName)
-		printInfo(12, "Version", osInfo.VersionID)
+		printInfo(12, "Name", osInfo.ColoredName())
+		printInfo(12, "Pretty Name", osInfo.ColoredPrettyName())
+		printInfo(12, "Version", osInfo.Version)
 		printInfo(12, "ID", osInfo.ID)
 		printInfo(12, "ID Like", osInfo.IDLike)
 		printInfo(12, "Version ID", osInfo.VersionID)
 		printInfo(12, "Version Code", osInfo.VersionCodename)
+		printInfo(12, "Platform ID", osInfo.PlatformID)
 		printInfo(12, "CPE", osInfo.CPEName)
 	}
 
@@ -40,11 +42,9 @@ func showOSInfo() {
 
 	if err != nil {
 		return
-	} else {
-		if osInfo == nil {
-			fmtutil.Separator(false, "SYSTEM INFO")
-			printInfo(12, "Name", systemInfo.OS)
-		}
+	} else if osInfo == nil {
+		fmtutil.Separator(false, "SYSTEM INFO")
+		printInfo(12, "Name", systemInfo.OS)
 	}
 
 	printInfo(12, "Arch", systemInfo.Arch)
@@ -52,11 +52,13 @@ func showOSInfo() {
 
 	containerEngine := "No"
 
-	switch {
-	case fsutil.IsExist("/.dockerenv"):
+	switch container.GetEngine() {
+	case container.DOCKER:
 		containerEngine = "Yes (Docker)"
-	case fsutil.IsExist("/run/.containerenv"):
+	case container.PODMAN:
 		containerEngine = "Yes (Podman)"
+	case container.LXC:
+		containerEngine = "Yes (LXC)"
 	}
 
 	fmtc.NewLine()