flatpak

• Run apps in containers
• Apps with same prefix run in the same container
• E.g., com.valvesoftware.Steam, com.valvesoftware.Steam.CompatibilityTool.Proton, com.valvesoftware.Steam.Utility.gamescope

remotes

• List all remotes

flatpak remotes

remote-add

flatpak remote-add --if-not-exists flathub "https://flathub.org/repo/flathub.flatpakrepo"

list

• List all installed packages

flatpak list

install

flatpak install "flathub" "com.spotify.Client"
flatpak install "com.spotify.Client" # flathub by default

uninstall

flatpak uninstall "com.valvesoftware.Steam.CompatibilityTool.Proton"

update

# update all apps
flatpak update

run

flatpak run "com.spotify.Client"

# exec into the container running an app
flatpak run --command=bash com.valvesoftware.Steam

kill

flatpak kill "com.valvesoftware.Steam"

override

• Set filesystem permission for an app

# application type
flatpak override com.foo.Bar --user
flatpak override com.foo.Bar --system # required to run as root
flatpak override com.foo.Bar # same as system

# show overrides
flatpak override --show com.foo.Bar

# filesystem permission
flatpak override --filesystem "/give/permission/to/dir/" com.foo.Bar

# reset existing overrides
flatpak override --reset com.foo.Bar

# set environment variable
flatpak override --env=VARIABLE_NAME=VARIABLE_VALUE com.foo.Bar