xlsclients
List connected X11 client applications
TLDR
List X clients
$ xlsclients
Show all windows$ xlsclients -a
Long format$ xlsclients -l
Specific display$ xlsclients -display [:0]
SYNOPSIS
xlsclients [-a] [-l] [-display dpy] [options]
DESCRIPTION
xlsclients lists the client applications currently connected to an X display server. For each client, it shows the window name and the command used to launch it, providing a quick overview of what X11 applications are running.The tool is useful for debugging X11 sessions, identifying which applications are consuming display resources, and verifying that expected clients are connected. The -a option shows clients across all screens, while -l provides a long format with additional detail about each client's machine name and command line.
PARAMETERS
-a
All screens.-l
Long format.-display DPY
X display.-m MAXCMD
Max command length.
INSTALL
sudo apt install x11-utils
sudo dnf install xlsclients
sudo zypper install xlsclients
brew install xlsclients
nix profile install nixpkgs#xlsclients
CAVEATS
X11 only. No Wayland. Limited info shown.
HISTORY
xlsclients is a standard X11 utility for listing client applications connected to an X server.