j4-dmenu-desktop

j4-dmenu-desktop is a fast desktop menu using dmenu (or compatible programs). It scans .desktop files in $XDG_DATA_HOME and $XDG_DATA_DIRS, providing a menu for launching applications.

It is inspired by i3-dmenu-desktop. Like i3-dmenu-desktop, j4-dmenu-desktop offers optional integration with i3wm (but j4-dmenu-desktop should work just fine on about any desktop environment).

You can also execute shell commands using it.

Features

• speed
• conformance to the Desktop Entry Specification
• daemon mode with --wait-on which parses desktop files ahead of time
• support for history sorted by usage frequency using --usage-log
• automatic desktop file loading/removal in daemon mode using inotify/kqueue
• support for any dmenu-like program (j4-dmenu-desktop is independent of any desktop environment + it works with both Xorg and Wayland)
• (optional) i3 IPC integration
• multiple formatters available (program name, program name with executable path...)
• completions for all major shells + a manpage
• and more!

Build requirements

• Compiler with C++17 support
• CMake or Meson

Building with Meson:

./meson-setup.sh build
cd build
ninja src/j4-dmenu-desktop
sudo meson install

Building with CMake:

mkdir build
cd build
cmake ..
make
sudo make install

See BUILDING for more info.

Distribution packages

Archlinux

The package is provided in the Arch Linux extra repository. You can install it via

sudo pacman -S j4-dmenu-desktop

FreeBSD

j4-dmenu-desktop is now available in the FreeBSD Ports Collection. A prebuilt package can be installed via

pkg install j4-dmenu-desktop

Gentoo

j4-dmenu-desktop is available in Portage for the amd64 and x86 architectures. You can install it via

echo "x11-misc/j4-dmenu-desktop ~amd64 ~x86" >> /etc/portage/package.accept_keywords
emerge --ask x11-misc/j4-dmenu-desktop

The package is also provided by the gentoo-el overlay. You can install it with the following commands as root. (you need to have layman installed and configured)

layman -a gentoo-el
echo "=x11-misc/j4-dmenu-desktop-9999 **" >> /etc/portage/package.accept_keywords
emerge x11-misc/j4-dmenu-desktop

Ubuntu

The package is now in the apt repository. You can install it via

sudo apt-get install j4-dmenu-desktop

Debian

j4-dmenu-desktop is in Debian stable:

sudo apt install j4-dmenu-desktop

Nix / NixOS

j4-dmenu-desktop is in nixpkgs:

nix-env --install j4-dmenu-desktop
# Or use pkgs attribute of the same name in NixOS configuration

Examples

Run j4-dmenu-desktop:

j4-dmenu-desktop

Specify custom dmenu (useful on Wayland, tofi is used as example):

j4-dmenu-desktop --dmenu=tofi

Display 5 entries vertically at once:

j4-dmenu-desktop --dmenu="dmenu -l5"

display binary name alongside name (for example Chromium will become Chromium (/usr/bin/chromium)):

j4-dmenu-desktop --display-binary

Don't display generic names and use alacritty as terminal emulator:

j4-dmenu-desktop --no-generic --term alacritty

FAQ / RAQ / RMR

I want it to display normal binaries, too, yes?

You can put this in a script file and use it instead of calling j4dd directly:

j4-dmenu-desktop --dmenu="(cat ; (stest -flx $(echo $PATH | tr : ' ') | sort -u)) | dmenu"

Exchanging the cat and (stest ... sort -u) parts will swap the two parts (j4dd's output and the list of binaries).

Get the output into a pipe / launching a program by arbitrary user input

GOTO

How much faster is it?

% time i3-dmenu-desktop --dmenu="cat"
[{"success":true}]
i3-dmenu-desktop --dmenu="cat"  0.37s user 0.02s system 96% cpu 0.404 total
% time ./j4-dmenu-desktop --dmenu=cat
./j4-dmenu-desktop --dmenu=cat  0.01s user 0.01s system 107% cpu 0.015 total

More than 25 times faster :)