Streamable archive formats
Archive formats such as tar(5) and cpio(5) have the advantage of being streamable, so you can use them for transferring data with pipes and remote shells, without having to store the archive in the middle of the process, for instance:
$ cd public_html/blog $ rgrep -lF "archive" data/articles \ | pax -w \ | ssh newserver "mkdir public_html/blog ; cd public_html/blog ; pax -r"
Please note that this is not meant to be systemd-bashing, just a criticism base one a counter-example refutation of Josselin's implication that there is no use case better covered by SysV init: this is false, as there is at least one. And yes, there are probably many cases better covered by systemd, I am making no claims about that.
Since systemd is now the default init system under Debian Jessie, it got installed to my system and I had a chance to test it. The result is disappointing: it does not work well with cryptsetup, so I am switching back to SysV init and RC.
Major desktop environments such as Xfce or KDE have a built-in computer suspend feature, but when you use a lighter alternative, things are a bit more complicated, because basically: only root can suspend the computer. There used to be a standard solution to that, using a D-Bus call to a running daemon upowerd. With recent updates, that solution first stopped working for obscure reasons, but it could still be configured back to be usable. With newer updates, it stopped working again, but this time it seems it is gone for good:
$ dbus-send --system --print-reply \ --dest='org.freedesktop.UPower' \ /org/freedesktop/UPower org.freedesktop.UPower.Suspend Error org.freedesktop.DBus.Error.UnknownMethod: Method "Suspend" with signature "" on interface "org.freedesktop.UPower" doesn't exist
It should be no news that PayPal have made an habit of opposing to projects that fight for the respect of freedom and democracy by cutting their funds. Anyway, they have just provided us another example of such an abuse, against the ProtonMail project.