为什么我不能通过命令行安装 Timeshift？
sudo apt install timeshift
[sudo] password for linuxkidinside:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package timeshift
在 Ubuntu 软件上也找不到它。
sudo apt update Ign:7 之后
Ign:7 ppa.launchpadcontent.net/teejee2008/ppa/ubuntu jammy InRelease
Err:8 ppa.launchpadcontent.net/teejee2008/ppa/ubuntu jammy Release
404 Not Found [IP: 185.125.190.52 443]
sudo add-apt-repository -y ppa:teejee2008/timeshift 之后
Repository: 'deb https://ppa.launchpadcontent.net/teejee2008/timeshift/ubuntu/ jammy main'
Description:
Latest release of Timeshift
More info: https://launchpad.net/~teejee2008/+archive/ubuntu/timeshift
Adding repository.
Adding deb entry to /etc/apt/sources.list.d/teejee2008-ubuntu-timeshift-jammy.list
Adding disabled deb-src entry to /etc/apt/sources.list.d/teejee2008-ubuntu-timeshift-jammy.list
Adding key to /etc/apt/trusted.gpg.d/teejee2008-ubuntu-timeshift.gpg with fingerprint 1B32B87ABAEE357218F6B48CB5B116B72D0F61F0
Hit:1 https://packages.microsoft.com/repos/edge stable InRelease
Hit:2 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:3 http://ph.archive.ubuntu.com/ubuntu jammy InRelease
Hit:4 http://ph.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:5 http://ph.archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:6 https://ppa.launchpadcontent.net/danielrichter2007/grub-customizer/ubuntu jammy InRelease
Ign:7 https://ppa.launchpadcontent.net/teejee2008/ppa/ubuntu jammy InRelease
Get:8 https://ppa.launchpadcontent.net/teejee2008/timeshift/ubuntu jammy InRelease [17.5 kB]
Err:9 https://ppa.launchpadcontent.net/teejee2008/ppa/ubuntu jammy Release
404 Not Found [IP: 185.125.190.52 443]
Get:10 https://ppa.launchpadcontent.net/teejee2008/timeshift/ubuntu jammy/main amd64 Packages [584 B]
Get:11 https://ppa.launchpadcontent.net/teejee2008/timeshift/ubuntu jammy/main Translation-en [308 B]
Reading package lists... Done
E: The repository 'https://ppa.launchpadcontent.net/teejee2008/ppa/ubuntu jammy Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.