When I am trying to unzip a file "Desktop.zip" I am getting below error as shown in figure:
I have made this zip file in ubuntu 20.04. Then downgraded to 18.04 and tried to unzip here.
I am not able to understand what and why is this problem occuring.
Although I am able to extract by using terminal command: $ unzip Desktop.zip
But not by GUI, I am interested to know how can I solve it, if possible.
When I'm trying to run "sudo apt-get update" on ubuntu 18.04 LTS, I'm getting error in below comments:
Hit:1 http://in.archive.ubuntu.com/ubuntu bionic InRelease
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://in.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:4 http://in.archive.ubuntu.com/ubuntu bionic-backports InRelease
Hit:5 https://dl.winehq.org/wine-builds/ubuntu bionic InRelease
Hit:6 http://ppa.launchpad.net/nathan-renniewaldock/flux/ubuntu bionic InRelease
Ign:7 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 InRelease
Hit:8 http://dl.google.com/linux/chrome/deb stable Release
Err:9 http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 Release
404 Not Found [IP: 2620:113:80c0:8::13 80]
Hit:10 http://deb.playonlinux.com trusty InRelease
Hit:11 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:12 http://ppa.launchpad.net/slgobinath/safeeyes/ubuntu bionic InRelease
Hit:14 https://download.sublimetext.com apt/stable/ InRelease
Hit:15 http://ppa.launchpad.net/webupd8team/java/ubuntu bionic InRelease
Hit:16 http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu bionic InRelease
Reading package lists... Done
E: The repository 'http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 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.
I have tried below links, but nothing worked. apt- sudo apt-get update not working! "sudo apt-get update" is not working
Please help me in resolving the error!
I wanted to know for how much time the screen of my laptop(with Ubuntu) was 'ON' for the whole day.
I have used 'uptime -p' but it doesn't work if you turned your system off and then later turned ON for use. Hence, it tells for how long the system(not screen) is running from the last time it was turned ON.
Please suggest if there are any other softwares/desktop-apps also.
When I used the command lsb_release, System threw an error that "No lsb modules are available". So what are they and why to install them to get my system info(through command lsb_release)?