Stop retyping broken commands: Term-Undo clears errors and restores your Zsh buffer with Alt+U

A Lightweight Zsh Utility for Instant Terminal Error Cleanup and Command Recovery

Term-Undo is a lightweight Zsh utility designed to simplify terminal error recovery by clearing unwanted multi-line error output and restoring a previously entered command to the input buffer.

It aims to provide a clean and efficient recovery workflow without duplicating prompts, disrupting the existing Zsh configuration, or deleting command history.

Quick Usage

Term-Undo provides two ways to initiate command recovery.

Tip: Recover your previous command without manually retyping it, where supported by the current shell state and implementation.

One-Line Installation

Install Term-Undo with a single command in your Zsh terminal.

Installation Command:

curl -fsSL https://raw.githubusercontent.com/nahid-mahmud555/term-undo/main/install.sh | bash

Reload Zsh Configuration After installation, reload your Zsh configuration:

source ~/.zshrc

This applies the configuration changes to the current shell session.

Note for Root Users

📝 Note for Root Users Standard users and the superuser (root) maintain separate home directories and shell configuration files (.zshrc).

• Standard User: /home/username/.zshrc
• Root User: /root/.zshrc

Installing Term-Undo under a standard user account does not automatically enable it in the root environment. If your root terminal defaults to Bash, switch to a Zsh session before running the installation commands.

Installation for Root Users

Run the following commands in order:

Step 1 - Switch to Root Privileges:

sudo -i

Step 2 - Start a Zsh Session:

zsh

Step 3 - Install Term-Undo:

curl -fsSL https://raw.githubusercontent.com/nahid-mahmud555/term-undo/main/install.sh | bash

Step 4 - Reload Root's Zsh Configuration:

source ~/.zshrc

Note: Each command is provided separately for easy copying. Make sure you execute them sequentially in the same root session. Term-Undo must be installed and configured separately for the root user and standard user.

Security note: Review the installation script before executing a remotely downloaded script through a shell.

Key Features

• Instant Error Cleanup: Uses terminal control sequences to remove unwanted error output. The number of lines cleared depends on the implementation and the terminal layout.
• Command Buffer Restoration: Designed to restore a previously entered command to the Zsh input buffer, allowing the command to be edited before execution.
• Two-Line Prompt Compatibility: Designed with two-line Zsh prompts in mind, including configurations commonly used in Kali Linux.
• Command History Preservation: Designed to preserve the existing .zsh_history file without deleting previously recorded commands.
• Cross-Platform Support: Targets native Linux environments and Windows Subsystem for Linux (WSL/WSL2) running a compatible Zsh configuration.
• Simple Recovery Workflow: Provides keyboard-shortcut and command-based recovery options to reduce manual terminal cleanup and command re-entry.

Supported Environments

Term-Undo is intended for the following environments, subject to compatibility testing.

Compatibility may vary depending on the Zsh version, terminal emulator, key-binding configuration, and installation environment.

How It Works

The intended recovery workflow consists of the following steps:

1. Execute a command in your Zsh terminal.
2. If the command produces unwanted multi-line error output, initiate Term-Undo using Alt + U or the undo command.
3. Term-Undo runs its configured terminal cleanup and command-recovery logic.
4. The previous command is restored to the input buffer when recovery is supported by the current implementation.
5. Review, edit, or execute the restored command as needed.

Result: A cleaner terminal and a more convenient command-recovery workflow.

Requirements

• Zsh shell.
• curl for the one-line installation method.
• An internet connection during installation.
• A terminal emulator compatible with the configured keyboard shortcut and terminal control sequences.

Repository

Project: Term-Undo v6.0
Author and Maintainer: Nahid Mahmud
GitHub Profile: @nahid-mahmud555
Repository: nahid-mahmud555/term-undo
Installation Script: install.sh

Release Info

📅 Release Info

• Date: 24 Oct 2026
• Environment: Kali Linux (Zsh)

Term-Undo is Launching on Product Hunt!

We are excited to announce that Term-Undo v6.0 is officially scheduled to launch on Product Hunt!

📅 Launch Date: October 26th, 2026 @ 12:01 AM PDT
🔗 Product Hunt Page: Term-Undo on Product Hunt
🔔 Support the Launch: Please visit our Product Hunt Page and click "Notify Me" to support us as soon as we go live!

License

Term-Undo is intended to be released as an open-source project under the MIT License. See the repository's LICENSE file for the complete license terms.

Final Statement

Term-Undo - Clean Terminal. Quick Recovery. A lightweight utility designed to make Zsh command recovery simpler, cleaner, and more efficient.