package name for common used Linux util in Debian/Ubuntu
ps
apt install -y procps
ping
apt install -y iputils-ping
telnet
apt install -y telnet
general solution for apt get/apt upgrade similiar issues
first,
sudo dpkg --configure -a
followed by:
sudo apt --fix-broken install
The keyboard shortcuts setting in the Settings app can only support 4 workspaces. However, I want to use 8 workspaces to implement the goal of "everything in its right place". Solution:
sudo apt install dconf-editor
dconf-editor
org/gnome/desktop/wm/keybindings
# Then you can do what you want to do there
Reference
By the way, my final configuration is shown below:
Ctrl + 1-8
Switch to workspace 1-8
Ctrl+Alt+1-8
Move current window to workspace 1-8 and jump to that workspace
- Workspace 1: Chrome
- Workspace 2: Gnome-terminal
- Workspace 3: Rider
- Workspace 4: WebStorm
- Workspace 5: Ebook reader (Evince and others)
- Workspace 6: File Manager, BitTorrent downloader,
- Workspace 7: VMs
- Workspace 8: Settings, Telegram, music player, misc.
I followed this article to upgrade the kernel of one of our Linux server runs CentOS8.
According to that article, upgrade the kernel of a CentOS system is rather simple, you just need to run the following command as root:
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
dnf -y install https://www.elrepo.org/elrepo-release-8.0-2.el8.elrepo.noarch.rpm
dnf -y --enablerepo=elrepo-kernel install kernel-ml
Everything goes fine before I try to boot up one of the VM in Virtualbox 6.
Boot failure, "The system is currently not set up to build kernel modules, please install the Linux kernel header files matching the current kernel.", it says.
Obviously, we need the correct header file, after digging a while on Google, I didn't get an answer. Then I review the steps I have done to upgrade the kernel. Oh, I got the solution below:
dnf -y --enablerepo=elrepo-kernel install kernel-ml-devel
/sbin/rcvboxdrv setup
Problem resolved.
You are already using Linux, so you have dd already, you don't need any other tools to make a bootable USB disk!
sudo dd bs=1M if=galliumos-3.1-baytrail.iso of=/dev/sda ; sync
Notice:
You should use your iso file name and replace /dev/sda
to your own USB disk device.
Reference