VNCSERVER installtion and configuration in Ubuntu

sudo apt-get update && sudo apt-get upgrade -y


sudo apt-get install ubuntu-desktop gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal

sudo apt-get install --no-install-recommends ubuntu-desktop gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal


sudo apt-get install vnc4server


#!/bin/sh

# Uncomment the following two lines for normal desktop:
# unset SESSION_MANAGER
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
x-window-manager &

export XKL_XMODMAP_DISABLE=1
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS

gnome-session &
gnome-panel &
gnome-settings-daemon &
metacity &
nautilus &
gnome-terminal &



vncserver -geometry 1920x1200 -depth 24


sudo apt-get install xfce4 xfce4-goodies

gsettings set org.gnome.Vino require-encryption false

How to Install or Upgrade to Kernel 4.20 in RHEL 7

# uname -sr

# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
# rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm

#yum --disablerepo="*" --enablerepo="elrepo-kernel" list available

# yum --enablerepo=elrepo-kernel install kernel-ml

#reboot

Select new kernel 

Set Default Kernel Version in GRUB


# vi /etc/default/grub

GRUB_TIMEOUT=5
GRUB_DEFAULT=0
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/root rd.lvm.lv=centos/swap crashkernel=auto rhgb quiet"
GRUB_DISABLE_RECOVERY="true"


Next, run the following command to recreate the kernel configuration.

Rebuild the /boot/grub2/grub.cfg file by running the grub2-mkconfig -o command as follows:

On BIOS-based machines: ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
On UEFI-based machines: ~]# grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg