xkill command not found

In this troubleshooting guide we learn how to fix xkill command not found error message

Introduction

When you run more command in linux terminal / console, you get the following error message

xkill: command not found

or when using sudo you get the following error message

sudo: xkill: command not found

Solutions to xkill: command not found

How To Fix xkill: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu xkill is provided by x11-utils package.

x11-utils is:

An X client is a program that interfaces with an X server (almost always via the X libraries), and thus with some input and output hardware like a graphics card, monitor, keyboard, and pointing device (such as a mouse).

This package provides a miscellaneous assortment of X utilities that ship with the X Window System, including:

  • appres, editres, listres and viewres, which query the X resource database;
  • luit, a filter that can be run between an arbitrary application and a UTF-8 terminal emulator;
  • xdpyinfo, a display information utility for X;
  • xdriinfo, query configuration information of DRI drivers;
  • xev, an X event displayer;
  • xfd, a tool that displays all the glyphs in a given X font;
  • xfontsel, a tool for browsing and selecting X fonts;
  • xkill, a tool for terminating misbehaving X clients;
  • xlsatoms, which lists interned atoms defined on an X server;
  • xlsclients, which lists client applications running on an X display;
  • xlsfonts, a server font list displayer;
  • xmessage, a tool to display message or dialog boxes;
  • xprop, a property displayer for X;
  • xvinfo, an Xv extension information utility for X;
  • xwininfo, a window information utility for X;

The editres and viewres programs use bitmap images provided by the xbitmaps package. The luit program requires locale information from the libx11-data package.

To fix this problem, we can install more using the command below.

sudo apt-get -y install x11-utils

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install x11-utils.

sudo apt -y install x11-utils

Or if you have aptitude installed you can use the following command.

sudo aptitude install x11-utils

Summary

In this tutorial we learn how to fix xkill command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.