The HTTP Time Protocol (HTP) is used to synchronize a computers time with web servers as reference time source. This program can be used instead of ntpdate or similar in networks that have a firewall blocking the NTP port.
Htpdate will synchronize the computer time to Greenwich Mean Time (GMT), using the timestamps from HTTP headers found in web server responses (the HEAD method will be used to get the information).
Htpdate works through proxy servers. Accuracy of htpdate will be usually within 0.5 seconds (better with multiple servers).
To allow the snap package to adjust the time you need to connect the time-control interface after installation and restart the daemon:
snap connect htpdate-daemon:time-control
. You can set the list of hosts (default: google.com) to query for time via a snap setting like:
snap set htpdate-daemon hosts="google.com www.linux.org"
You can also set additional options for the daemon
snap set htpdate-daemon extra-opts="-d"
It is recommended that you disable your hosts ntp time sync mechanism when using htpdate-daemon.
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snapd can be installed from Manjaro’s Add/Remove Software application (Pamac), found in the launch menu. From the application, search for snapd, select the result, and click Apply.
Alternatively, snapd can be installed from the command line:
sudo pacman -S snapd
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install htpdate-daemon, simply use the following command:
sudo snap install htpdate-daemon
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.