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Configure proper timezone according to your physical location by using following wizard: sudo dpkg-reconfigure tzdata Enable NTP: timedatectl set-ntp true Check time and date settings: timedatectl status Install ntpdate tool: apt install ntpdate Fix problem with ToS (Type of Service) field value in IP packet. By default ToS is set to 0xc0 value by ntpd… Continue reading [Raspberry Pi] NTP time synchronization
How to check graphical session type (Wayland or Xorg) on Fedora system. At first, use following command to get current session ID: loginctl Next, use bellow command to check graphical session type: loginctl show-session ID -p Type where ID is session ID from previous command output. Example (where session ID = 1): $ loginctl … Continue reading Fedora - checking graphical session type (Wayland or Xorg)
Load new Linux kernel with kexec - method faster than reboot. Just run below script using sudo or as a root. Script is also available at: https://github.com/openterprise/scripts/blob/master/kexec.sh #!/bin/bash latestkernel=`ls -t /boot/vmlinuz-* | sed "s/\/boot\/vmlinuz-//g" | head -n1` echo "kernel current: $(uname -r)" echo "kernel target: ${latestkernel}" echo "" echo "Arming kexec..." #kexec -l /boot/vmlinuz-${latestkernel} --initrd=/boot/initramfs-${latestkernel}.img… Continue reading Linux - load new kernel with kexec - faster than reboot
How to capture network traffic from/to virtual machine running on VMware ESXi host. This method uses pktcap-uw tool which is available in ESXi 5.5 and later. First enable SSH on your VMware ESXi host. Connect to ESXi host via SSH. List running virtual machines and check World-ID: esxcli network vm list Assuming that our VM… Continue reading Capturing network traffic to/from virtual machine running on VMware ESXi host
To display text messages instead of splash screen during Fedora startup: plymouth-set-default-theme details -R grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg dracut -f reboot