How to configure networking on Ubuntu LTS 18.04 using Netplan
As of Ubuntu 18.04 the default network stack uses something called Netplan. To see which version of Ubuntu you have, do cat /etc/issue. If you
Operating Systems
Where do you find the IP address settings for Ubuntu 16.04?
Check if your target system is Ubuntu 16.04 (this procedure may work with other versions as well but not newer versions (18.04+) that use something
How to change the hostname in CentOS 7
To change the hostname in CentOS 7, you have to do four things: 1. Modify /etc/sysconfig/network HOSTNAME=hostname.domain.com 2. Modify /etc/hosts Find: 127.0.0.1 localhost localhost.localdomain localhost4
-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory
You deploy a new server and get the following message: > -bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory How to
How to protect a Linux system from brute force attacks
The most common type of attack on Linux servers are performed by script kiddies. They have computers running that continuously scans the internet to find
How to use Tar and Unzip on Linux to compress and decompress files
Tar and Zip are both file compression formats that you’ll encounter. You can use built-in utilities in Linux to compress and decompress / expand these
Where are Linux log files stored?
The key to solving Linux related server problems is to know where the log files are stored and to be able to get to them
How can I find out my public IP address using the command line?
dig +short myip.opendns.com @resolver1.opendns.com Reference: https://www.cyberciti.biz/faq/how-to-find-my-public-ip-address-from-command-line-on-a-linux/
How to sort files in Linux in date order
Use the following flags with ‘ls’ to control the directory date sort order: ls -lat -l is for long style -a is for all (including
How to turn off or on a Linux service from starting up from the command line
Use this command: # chkconfig service_name on or off