Snap

Snap is a software deployment and package management for Linux available at least since 2015 with support for channels and parallel installs .

Snaps are basically an application compiled together with its dependencies and libraries – providing a sandboxed environment for the application to run. These are easier and faster to install, can receive latest updates and is confined from the OS and other apps.

Basic operations

• Installation: sudo apt install snapd
• Install your first application:

snap install hello

• Remove an application: snap remove hello-world
• Search for your application: snap find SNAP_TO_SEARCH
  • Search for Canonical’s snaps:

snap find Canonical

• List installed snaps:

snap list

• snap changes
• Show Info:

snap info SNAP_NAME

• Update your snaps: sudo snap refresh
• snap set. For example: snap set rocketchat-server port=4000
• snap get
• snap switch
• snap services

Directories

• /var/lib/snapd/snaps/
• /snap/
• /snap/bin/
• /var/lib/snapd/cache/

Snapshots and Roll Back

• Take a snapshot: snap save
• Roll Back (including data): sudo snap revert hello

Channels

• Change channel: sudo snap refresh hello --channel=beta
• snap info PACKAGE (To show channels)

Adoption

Snaps were introduced in Ubuntu 16.04 LTS.

Activities

• Read snap source code: https://github.com/snapcore/snapd
• Enable snaps in Fedora: sudo dnf install snapd and sudo systemctl enable --now snapd.socket
• sudo systemctl restart snapd.service

Related

• snap start
• Squashfs
• find /snap/<snapname>/current/
• /snap/bin/
• Flatpak
• systemctl stop snapd

See also

• Snap: snap, snapd, snapctl, snapcraft, snap: [list | install |find | info | services | start| stop | remove | refresh | set | logs ] snapd | snap list | snap version | snap find aws | snap --help ]
• APT: wajig, apt-cache, add-apt-repository PPA, apt [ install | remove |purge | show | list | changelog | update | upgrade], do-release-upgrade, apt-mark, apt full-upgrade, sources.list, APT Automatic updates, unattended-upgrade, apt-transport-https, apt-get update, /etc/apt/, /etc/apt/apt.conf.d/50unattended-upgrades, /etc/apt/apt.conf.d/, /etc/apt/apt.conf.d/20auto-upgrades, apt-file, apt-utils
• Package managers: dpkg, APT, RPM, YUM, DNF, homebrew, pkgutil, opkg, Helm, pkg and snap, npm, Aptitude, alien, Conan, CRAN, Chocolatey, NuGet, PackageKit, Wajig, pacman, PIP, Apache Ivy, List packages, List files in packages, Spack
• Ubuntu, Ubuntu releases, snap, MAAS, PPA, Canonical Livepatch, Ubuntu Advantage, netplan, multipass, Landscape, Subiquity, lsb_release, Ubuntu MATE, Wayland

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Original Source: https://en.wikiversity.org/wiki/Snap