How to fix error: add-apt-repository: command not found on Ubuntu This tutorial about how to easy fix error: add-apt-repository: command not found on Ubuntu or Debian Linux systems. When you adding a new PPA repository in your Ubuntu or Debian… Continue Reading
Useful Netcat Examples In this netcat tutorial you can see useful netcat examples to help you use this powerful tool. Netcat (nc – in short) can be called “Swiss army of knife” in Linux network terminal utilities. Netcat can be… Continue Reading
SSH Jump Host Jumphost or jumphost servers are intermediaries between the high security zone and the DMZ zones. And provide transparent control of devices in the DMZ zone. Of course jump host should be highly secured for preventing access to… Continue Reading
Proxmox: cluster not ready – no quorum? (500). Easy fix To easy fix on cluster not ready – no quorum? (500) error on proxmox serverrun command: # pvecm expected 1 Proxmox Change IP Address If you like what… Continue Reading
VsFTPd Passive Mode Enable If you don’t have already installed vsftpd on your Linux see article: How to Install vsftpd Server on CentOS. To enable vsftpd Passive Mode in Linux edit vsftpd config file: vsftpd.conf. Open with your favorite text… Continue Reading
How To Test Internet Speed On Linux VPS To get internet speed from command line Linux VPS we can use Python utility from SPEEDTEST – Speedtest-cli. Speedtest-cli is a script developed in Python programming language. Lets download SPEEDTEST utility from… Continue Reading
How To Generate Self-Signed TLS Certificate TLS (Transport Layer Security)is cryptographic protocol for providing secure communications. To Generate Self-Signed TLS Certificate login as root user. Create certs directory. # mkdir /root/certs # cd /root/certs Generate certificate with openssl command line… Continue Reading
Ubuntu 18.04 Set Static IP Ubuntu 18.04 LTS Server using new IP addresses configuring method. For network configuration Ubuntu 18.04 uses Netplan Netplan’s configuration files use the YAML format. Netplan configuration files can be found in: /etc/netplan/ directory. In this… Continue Reading
CUDA. Samples: Installed in /home/user/, but missing recommended libraries After installing CUDA 10.1 in Ubuntu you may have error: Samples: Installed in /home/user/, but missing recommended libraries. Because some CUDA samples use third-party libraries which may not be installed by… Continue Reading
How To Install Open VM Tools Ubuntu 18.04 open-vm-tools is the open source implementation of VMware Tools The recommended way of installing VMware tools for a Ubuntu 18.04 VMware virtual machine is to install the native open-vm-tools and/or open-vm-tools-desktop… Continue Reading