echo 'deb http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0/ /' > /etc/apt/sources.list.d/home:alex_sh.list
apt-get update
Ign:1 http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 InRelease
Get:2 http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 Release [988 B]
...
Get:5 http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 Release.gpg [189 B]
...
Ign:5 http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 Release.gpg
...
Get:10 http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 Packages [964 B]
Fetched 2,141 B in 5s (389 B/s)
Reading package lists... Done
W: GPG error: http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A41001039EC56A71
W: The repository 'http://download.opensuse.org/repositories/home:/alex_sh/Debian_9.0 Release' is not signed.
...
apt-get install -t InRelease gsmartcontrol
... The value 'InRelease' is invalid ...
apt-get install -t Release gsmartcontrol
... E: The value 'Release' is invalid ...
apt-get install -t alex_sh gsmartcontrol
...E: The value 'alex_sh' is invalid...
要从 alex_sh 安装 gsmartcontrol 还需要做什么？