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Install PostgreSQL on Ubuntu 16.04

To install PostgreSQL on Ubuntu, run apt install postgresql To check status, run Using PostgreSQL Back to PostgreSQL


Xfce 4 Desktop Error xfconfd isn’t running

When login to Xfce Desktop, i get following error Unable to determine failsafe session name. Possible causes: xfconfd isn’t running (D-Bus setup problem); environment variable $XDG_CONFIG_DIRS is set incorrectly (must include “/etc”), or xfce4-session is installed incorrectly. This is due


usermod – modify linux user account

usermod command allow you to change a user account. To change a users shell, run usermod -s /bin/bash USER_NAME


dmidecode – Find Hardware Details

dmidecode shows details about computer hardware. On RHEL/CentOS, you need to install it with Show All Hardware Details Get RAM Details To see installed RAM sizes, run Example [root@server1 ~]# dmidecode -t memory | egrep “^\s+Size” Size: 8192 MB Size:


Disable Internet Explorer Enhanced Security in Windows Server

To disable IE Enhanced Security in Internet Explorer, Start Server Manager Click on “Local Server” on left side menu. on Properties on right side, click on IE Enhanced Security Configuration. You can disable it for Administrators.


useradd – create linux user

To create a user, run -d specify the home directory of the user. -s specify the shell used by user. To create a linux user with no SSH/terminal access, run Create a User to run system service Normally system services


Flush Cache with Google Public DNS

I have been using Google Public DNS as my DNS revolvers 8.8.8.8 8.8.4.4 Since google have peering with most ISP, it did work very well so far. When is using ISP provided DNS servers, it used it go down once


Install OpenVPN Server On Ubuntu

To install OpenVPN, go to https://openvpn.net/index.php/access-server/download-openvpn-as-sw.html Download software for your OS. For Ubuntu download and install it with You will see root@backup:~# dpkg -i openvpn-as-2.1.4b-Ubuntu16.amd_64.deb Selecting previously unselected package openvpn-as. (Reading database … 91797 files and directories currently installed.) Preparing


IPv6

IPv6 is newer version of IP Address. It is ugly, hard to remember lol To list IPv6 address configured on your computer, run Disable IPv6 On CentOS 7 Edit file Add following Now run Temp Disable IPv6 On reboot IPv6