How to reset root password on Hetzner Dedicated Server
If you forget the root password of a Hetzner dedicated server, you need to boot the server into rescue mode,
rsyslog Unsafe symlinks encountered in /var/log, refusing
When updating packages on an Ubuntu server, I got the error “Unsafe symlinks encountered in /var/log, refusing.”. This is due
How to Split large CSV file into smaller files
To split a large CSV file into smaller parts, you can use the split command The above command will split
CentOS Error checking for OpenSSL library … not found
When installing Nginx from source on a CentOS 7 server, I got the following error To fix the error, install
Linux Disk Quota
To check disk quota for a Linux user, run Sample
How to find Operating System of a remote computer using nmap?
Nmap is a network exploration and security auditing tool. It can be used to identify hosts and services on a
Terraform
To install Terraform on Ubuntu, run For instructions on other Linux distributions, see https://www.terraform.io/downloads
How to Upgrade Debian 10 to Debian 11
One of the advantages of the Debian operating system is easy to upgrade to the newer version. Login to your
How to redirect traffic to another IP using iptables
After migrating websites to a new server, you need to point domains to the new server by changing the name
How to sort the result of du -h command
To sort the result of “du -h” command, you can use If you want to list files in current files
How to change the SSH Port in Linux
By default SSH service runs on port 22. Running SSH service on port 22 is not secure as it can
How to change IP address of VestaCP Server
Recently I upgraded a VestaCP server running on an Amazon Lightsail server. Upgrade resulted in a change of the internal