diff --git a/cmd/chkbit/main.go b/cmd/chkbit/main.go
index e93d8b8..540dc19 100644
--- a/cmd/chkbit/main.go
+++ b/cmd/chkbit/main.go
@@ -10,9 +10,9 @@ import (
 	"time"
 
 	"github.com/alecthomas/kong"
-	"github.com/laktak/chkbit/check"
-	"github.com/laktak/chkbit/term"
-	"github.com/laktak/chkbit/util"
+	"github.com/laktak/chkbit"
+	"github.com/laktak/chkbit/cmd/chkbit/util"
+	"github.com/laktak/lterm"
 )
 
 type Progress int
@@ -31,14 +31,14 @@ const (
 
 var appVersion = "vdev"
 var (
-	termBG      = term.Bg8(240)
+	termBG      = lterm.Bg8(240)
 	termSep     = "|"
-	termSepFG   = term.Fg8(235)
-	termFG1     = term.Fg8(255)
-	termFG2     = term.Fg8(228)
-	termFG3     = term.Fg8(202)
-	termOKFG    = term.Fg4(2)
-	termAlertFG = term.Fg4(1)
+	termSepFG   = lterm.Fg8(235)
+	termFG1     = lterm.Fg8(255)
+	termFG2     = lterm.Fg8(228)
+	termFG3     = lterm.Fg8(202)
+	termOKFG    = lterm.Fg4(2)
+	termAlertFG = lterm.Fg4(1)
 )
 
 var cli struct {
@@ -80,25 +80,25 @@ func (m *Main) log(text string) {
 	m.logger.Println(time.Now().UTC().Format("2006-01-02 15:04:05"), text)
 }
 
-func (m *Main) logStatus(stat check.Status, path string) {
-	if stat == check.STATUS_UPDATE_INDEX {
+func (m *Main) logStatus(stat chkbit.Status, path string) {
+	if stat == chkbit.STATUS_UPDATE_INDEX {
 		m.numIdxUpd++
 	} else {
-		if stat == check.STATUS_ERR_DMG {
+		if stat == chkbit.STATUS_ERR_DMG {
 			m.total++
 			m.dmgList = append(m.dmgList, path)
-		} else if stat == check.STATUS_PANIC {
+		} else if stat == chkbit.STATUS_PANIC {
 			m.errList = append(m.errList, path)
-		} else if stat == check.STATUS_OK || stat == check.STATUS_UPDATE || stat == check.STATUS_NEW {
+		} else if stat == chkbit.STATUS_OK || stat == chkbit.STATUS_UPDATE || stat == chkbit.STATUS_NEW {
 			m.total++
-			if stat == check.STATUS_UPDATE {
+			if stat == chkbit.STATUS_UPDATE {
 				m.numUpd++
-			} else if stat == check.STATUS_NEW {
+			} else if stat == chkbit.STATUS_NEW {
 				m.numNew++
 			}
 		}
 
-		if m.logVerbose || stat != check.STATUS_OK && stat != check.STATUS_IGNORE {
+		if m.logVerbose || stat != chkbit.STATUS_OK && stat != chkbit.STATUS_IGNORE {
 			m.log(stat.String() + " " + path)
 		}
 
@@ -107,12 +107,12 @@ func (m *Main) logStatus(stat check.Status, path string) {
 			if stat.IsErrorOrWarning() {
 				col = termAlertFG
 			}
-			term.Printline(col, stat.String(), " ", path, term.Reset)
+			lterm.Printline(col, stat.String(), " ", path, lterm.Reset)
 		}
 	}
 }
 
-func (m *Main) showStatus(context *check.Context) {
+func (m *Main) showStatus(context *chkbit.Context) {
 	last := time.Now().Add(-updateInterval)
 	stat := ""
 	for {
@@ -120,13 +120,13 @@ func (m *Main) showStatus(context *check.Context) {
 		case item := <-context.LogQueue:
 			if item == nil {
 				if m.progress == Fancy {
-					term.Printline("")
+					lterm.Printline("")
 				}
 				return
 			}
 			m.logStatus(item.Stat, item.Message)
 			if m.progress == Fancy {
-				term.Write(termBG, termFG1, stat, term.ClearLine(0), term.Reset, "\r")
+				lterm.Write(termBG, termFG1, stat, lterm.ClearLine(0), lterm.Reset, "\r")
 			} else {
 				fmt.Print(m.total, "\r")
 			}
@@ -150,7 +150,7 @@ func (m *Main) showStatus(context *check.Context) {
 					stat = util.LeftTruncate(stat, m.termWidth-1)
 					stat = strings.Replace(stat, "$", termSepFG+termSep+termFG2, 1)
 					stat = strings.Replace(stat, "$", termSepFG+termSep+termFG3, 1)
-					term.Write(termBG, termFG1, stat, term.ClearLine(0), term.Reset, "\r")
+					lterm.Write(termBG, termFG1, stat, lterm.ClearLine(0), lterm.Reset, "\r")
 				} else if m.progress == Plain {
 					fmt.Print(m.total, "\r")
 				}
@@ -159,13 +159,13 @@ func (m *Main) showStatus(context *check.Context) {
 	}
 }
 
-func (m *Main) process() *check.Context {
+func (m *Main) process() *chkbit.Context {
 	if cli.Update && cli.ShowIgnoredOnly {
 		fmt.Println("Error: use either --update or --show-ignored-only!")
 		return nil
 	}
 
-	context, err := check.NewContext(cli.Workers, cli.Force, cli.Update, cli.ShowIgnoredOnly, cli.Algo, cli.SkipSymlinks, cli.IndexName, cli.IgnoreName)
+	context, err := chkbit.NewContext(cli.Workers, cli.Force, cli.Update, cli.ShowIgnoredOnly, cli.Algo, cli.SkipSymlinks, cli.IndexName, cli.IgnoreName)
 	if err != nil {
 		fmt.Println(err)
 		return nil
@@ -183,11 +183,11 @@ func (m *Main) process() *check.Context {
 	return context
 }
 
-func (m *Main) printResult(context *check.Context) {
+func (m *Main) printResult(context *chkbit.Context) {
 	cprint := func(col, text string) {
 		if m.progress != Quiet {
 			if m.progress == Fancy {
-				term.Printline(col, text, term.Reset)
+				lterm.Printline(col, text, lterm.Reset)
 			} else {
 				fmt.Println(text)
 			}
@@ -196,9 +196,9 @@ func (m *Main) printResult(context *check.Context) {
 
 	eprint := func(col, text string) {
 		if m.progress == Fancy {
-			term.Write(col)
+			lterm.Write(col)
 			fmt.Fprintln(os.Stderr, text)
-			term.Write(term.Reset)
+			lterm.Write(lterm.Reset)
 		} else {
 			fmt.Fprintln(os.Stderr, text)
 		}
@@ -324,7 +324,7 @@ func main() {
 		}
 	}()
 
-	termWidth := term.GetWidth()
+	termWidth := lterm.GetWidth()
 	m := &Main{
 		logger:    log.New(io.Discard, "", 0),
 		termWidth: termWidth,
diff --git a/util/fm.go b/cmd/chkbit/util/fm.go
similarity index 100%
rename from util/fm.go
rename to cmd/chkbit/util/fm.go
diff --git a/util/lang.go b/cmd/chkbit/util/lang.go
similarity index 100%
rename from util/lang.go
rename to cmd/chkbit/util/lang.go
diff --git a/util/sparkline.go b/cmd/chkbit/util/sparkline.go
similarity index 100%
rename from util/sparkline.go
rename to cmd/chkbit/util/sparkline.go
diff --git a/util/sparkline_test.go b/cmd/chkbit/util/sparkline_test.go
similarity index 100%
rename from util/sparkline_test.go
rename to cmd/chkbit/util/sparkline_test.go
diff --git a/util/strings.go b/cmd/chkbit/util/strings.go
similarity index 100%
rename from util/strings.go
rename to cmd/chkbit/util/strings.go
diff --git a/util/strings_test.go b/cmd/chkbit/util/strings_test.go
similarity index 100%
rename from util/strings_test.go
rename to cmd/chkbit/util/strings_test.go
diff --git a/check/context.go b/context.go
similarity index 99%
rename from check/context.go
rename to context.go
index 08b9186..203485c 100644
--- a/check/context.go
+++ b/context.go
@@ -1,4 +1,4 @@
-package check
+package chkbit
 
 import (
 	"errors"
diff --git a/go.mod b/go.mod
index 1749bb0..1c8d7a4 100644
--- a/go.mod
+++ b/go.mod
@@ -4,11 +4,12 @@ go 1.22.3
 
 require (
 	github.com/alecthomas/kong v0.9.0
-	golang.org/x/sys v0.23.0
+	github.com/laktak/lterm v1.0.0
 	lukechampine.com/blake3 v1.3.0
 )
 
 require (
 	github.com/klauspost/cpuid/v2 v2.0.9 // indirect
+	golang.org/x/sys v0.24.0 // indirect
 	golang.org/x/term v0.23.0 // indirect
 )
diff --git a/go.sum b/go.sum
index de934f0..1df663f 100644
--- a/go.sum
+++ b/go.sum
@@ -8,10 +8,10 @@ github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUq
 github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 github.com/klauspost/cpuid/v2 v2.0.9 h1:lgaqFMSdTdQYdZ04uHyN2d/eKdOMyi2YLSvlQIBFYa4=
 github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
-golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
-golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
-golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+github.com/laktak/lterm v1.0.0 h1:hxRsBDHIWlMn+IV7C+6/tk4y81WqcO8F6G+52wSZUf4=
+github.com/laktak/lterm v1.0.0/go.mod h1:zwGyZi5PNuySqsDsRVNvBBYANy9k61oYgW6Flsm2AZg=
+golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
+golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.23.0 h1:F6D4vR+EHoL9/sWAWgAR1H2DcHr4PareCbAaCo1RpuU=
 golang.org/x/term v0.23.0/go.mod h1:DgV24QBUrK6jhZXl+20l6UWznPlwAHm1Q1mGHtydmSk=
 lukechampine.com/blake3 v1.3.0 h1:sJ3XhFINmHSrYCgl958hscfIa3bw8x4DqMP3u1YvoYE=
diff --git a/check/hashfile.go b/hashfile.go
similarity index 98%
rename from check/hashfile.go
rename to hashfile.go
index 99b5414..4e3f12a 100644
--- a/check/hashfile.go
+++ b/hashfile.go
@@ -1,4 +1,4 @@
-package check
+package chkbit
 
 import (
 	"crypto/md5"
diff --git a/check/ignore.go b/ignore.go
similarity index 99%
rename from check/ignore.go
rename to ignore.go
index 1dcf12b..b60b497 100644
--- a/check/ignore.go
+++ b/ignore.go
@@ -1,4 +1,4 @@
-package check
+package chkbit
 
 import (
 	"bufio"
diff --git a/check/index.go b/index.go
similarity index 99%
rename from check/index.go
rename to index.go
index bde77d6..aa6a3c9 100644
--- a/check/index.go
+++ b/index.go
@@ -1,4 +1,4 @@
-package check
+package chkbit
 
 import (
 	"encoding/json"
diff --git a/scripts/run_tests b/scripts/run_tests
index 3753676..fb708b5 100755
--- a/scripts/run_tests
+++ b/scripts/run_tests
@@ -17,3 +17,5 @@ fi
 $script_dir/build
 
 "$base_dir/chkbit" -u /tmp/chkbit
+# todo: validate
+
diff --git a/scripts/tests b/scripts/tests
index 5f3faa3..08aa460 100755
--- a/scripts/tests
+++ b/scripts/tests
@@ -4,4 +4,4 @@ set -e
 script_dir=$(dirname "$(realpath "$0")")
 cd $script_dir/..
 
-go test -v ./util
+go test -v ./cmd/chkbit/util
diff --git a/check/status.go b/status.go
similarity index 98%
rename from check/status.go
rename to status.go
index a3bfa2d..48fdf8f 100644
--- a/check/status.go
+++ b/status.go
@@ -1,4 +1,4 @@
-package check
+package chkbit
 
 type Status string
 
diff --git a/term/term.go b/term/term.go
deleted file mode 100644
index 3d6c2d1..0000000
--- a/term/term.go
+++ /dev/null
@@ -1,82 +0,0 @@
-package term
-
-import (
-	"fmt"
-	"os"
-
-	"golang.org/x/term"
-)
-
-var (
-	isTerm   = false
-	noColor  = false
-	stdoutFd = 0
-)
-
-func init() {
-	stdoutFd = int(os.Stdout.Fd())
-	isTerm = term.IsTerminal(stdoutFd)
-	if isTerm {
-		noColor = os.Getenv("NO_COLOR") != ""
-	} else {
-		noColor = true
-	}
-}
-
-const (
-	Reset         = "\033[0m"
-	Bold          = "\033[01m"
-	Disable       = "\033[02m"
-	Underline     = "\033[04m"
-	Reverse       = "\033[07m"
-	Strikethrough = "\033[09m"
-	Invisible     = "\033[08m"
-)
-
-func Write(text ...interface{}) {
-	fmt.Print(text...)
-}
-
-func Printline(text ...interface{}) {
-	fmt.Print(text...)
-	fmt.Println(ClearLine(0))
-}
-
-func Fg4(col int) string {
-	if noColor {
-		return ""
-	}
-	if col < 8 {
-		return fmt.Sprintf("\033[%dm", 30+col)
-	}
-	return fmt.Sprintf("\033[%dm", 90-8+col)
-}
-
-func Fg8(col int) string {
-	if noColor {
-		return ""
-	}
-	return fmt.Sprintf("\033[38;5;%dm", col)
-}
-
-func Bg8(col int) string {
-	if noColor {
-		return ""
-	}
-	return fmt.Sprintf("\033[48;5;%dm", col)
-}
-
-func ClearLine(opt int) string {
-	// 0=to end, 1=from start, 2=all
-	return fmt.Sprintf("\033[%dK", opt)
-}
-
-func GetWidth() int {
-	if isTerm {
-		width, _, err := term.GetSize(stdoutFd)
-		if err == nil {
-			return width
-		}
-	}
-	return 80
-}
diff --git a/term/term_windows.go b/term/term_windows.go
deleted file mode 100644
index 933e932..0000000
--- a/term/term_windows.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package term
-
-import (
-	"os"
-
-	"golang.org/x/sys/windows"
-)
-
-// from https://github.com/fatih/color
-
-func init() {
-	// Opt-in for ansi color support for current process.
-	// https://learn.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences#output-sequences
-	var outMode uint32
-	out := windows.Handle(os.Stdout.Fd())
-	if err := windows.GetConsoleMode(out, &outMode); err != nil {
-		return
-	}
-	outMode |= windows.ENABLE_PROCESSED_OUTPUT | windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
-	_ = windows.SetConsoleMode(out, outMode)
-}
diff --git a/check/worker.go b/worker.go
similarity index 98%
rename from check/worker.go
rename to worker.go
index eff0c7a..d00da7c 100644
--- a/check/worker.go
+++ b/worker.go
@@ -1,4 +1,4 @@
-package check
+package chkbit
 
 type WorkItem struct {
 	path         string