Programming language: Go
License: MIT License
Tags: Command Line     Standard CLI    
Latest version: v1.2.0

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Liner is a command line editor with history. It was inspired by linenoise; everything Unix-like is a VT100 (or is trying very hard to be). If your terminal is not pretending to be a VT100, change it. Liner also support Windows.

Liner is released under the X11 license (which is similar to the new BSD license).

Line Editing

The following line editing commands are supported on platforms and terminals that Liner supports:

Keystroke Action
Ctrl-A, Home Move cursor to beginning of line
Ctrl-E, End Move cursor to end of line
Ctrl-B, Left Move cursor one character left
Ctrl-F, Right Move cursor one character right
Ctrl-Left, Alt-B Move cursor to previous word
Ctrl-Right, Alt-F Move cursor to next word
Ctrl-D, Del (if line is not empty) Delete character under cursor
Ctrl-D (if line is empty) End of File - usually quits application
Ctrl-C Reset input (create new empty prompt)
Ctrl-L Clear screen (line is unmodified)
Ctrl-T Transpose previous character with current character
Ctrl-H, BackSpace Delete character before cursor
Ctrl-W, Alt-BackSpace Delete word leading up to cursor
Alt-D Delete word following cursor
Ctrl-K Delete from cursor to end of line
Ctrl-U Delete from start of line to cursor
Ctrl-P, Up Previous match from history
Ctrl-N, Down Next match from history
Ctrl-R Reverse Search history (Ctrl-S forward, Ctrl-G cancel)
Ctrl-Y Paste from Yank buffer (Alt-Y to paste next yank instead)
Tab Next completion
Shift-Tab (after Tab) Previous completion

Getting started

package main

import (


var (
    history_fn = filepath.Join(os.TempDir(), ".liner_example_history")
    names      = []string{"john", "james", "mary", "nancy"}

func main() {
    line := liner.NewLiner()
    defer line.Close()


    line.SetCompleter(func(line string) (c []string) {
        for _, n := range names {
            if strings.HasPrefix(n, strings.ToLower(line)) {
                c = append(c, n)

    if f, err := os.Open(history_fn); err == nil {

    if name, err := line.Prompt("What is your name? "); err == nil {
        log.Print("Got: ", name)
    } else if err == liner.ErrPromptAborted {
    } else {
        log.Print("Error reading line: ", err)

    if f, err := os.Create(history_fn); err != nil {
        log.Print("Error writing history file: ", err)
    } else {

For documentation, see http://godoc.org/github.com/peterh/liner

*Note that all licence references and agreements mentioned in the liner README section above are relevant to that project's source code only.