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Clear KornShell (ksh) history

Overview​

About this script

This script improves your privacy on Linux.

These changes use Linux system commands to update your settings.

KornShell is a shell that has different versions by different maintainers and developers such as ksh93+u, ksh93v-, and ksh2020. The latest maintained version is ksh93u+m, see its GitHub repository (ksh93/ksh).

Its history file (histfile) is saved at ~/.sh_history by default 1 2.

OpenBSD symlinks sh to ksh 3.

See also the Wikipedia page for more information.

This script uses Bash (Shell script) scripting language.

Use with Caution

This script is only recommended if you understand its implications. Some non-critical or features may no longer function correctly after running this script.

Implementation Details

  • Language: bash

  • Required Privileges: Root/sudo access

  • Compatibility: Linux only

  • Reversibility: Some changes may be permanent

Explore Categories​

This action belongs to Clear terminal history category. Reading terminal history is one of the attack techniques. The existence of bash history files is defined as an unsecured credential attack technique by MITRE. Read more on category page ▶

Apply now​

Choose one of three ways to apply:

  1. Automatically via privacy.sexy: The easiest and safest option.
  2. Manually by downloading: Requires downloading a file.
  3. Manually by copying: Advanced flexibility.

Alternative 1. Apply with Privacy.sexy​

privacy.sexy is free and open-source application that lets securely apply this action easily.

Open privacy.sexy

privacy.sexy instructions
  1. Open or download the desktop application
  2. Search for the script name: Clear KornShell (ksh) history.
  3. Check the script by clicking on the checkbox.
  4. Click on Run button at the bottom of the page.

Alternative 2. Download​

Reversible

This script is reversible, you can restore your changes to the initial/default state. The restore/revert methods provided here can help you fix issues.

If something goes wrong, use the Revert script provided above.

  1. Download the script file by clicking on the button below:

    Download script

  2. Run the script file by clicking on it.

Alternative 3. Copy​

This is for advanced users. Consider automatically applying or downloading the script for simpler way.

  1. Open Terminal

  2. Copy the following code:

Code to apply changes
rm -fv ~/.sh_history
sudo rm -fv /root/.sh_history
  1. Paste the code into terminal.
  2. Press Enter to apply the code.

Some scripts requires restarting your computer to take affect.

Support​

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