Speedtest is a great tool to verify the status of your internet connection. With it you could check if your ISP (Internet Service Provider) is providing you the speed you have contracted. Normally you would like to use the Speedtest Website version, but here I am going to explain how to use from a Linux Command Line or Linux Terminal. This tutorial is based of the use of the speedtest-cli GitHub Project....
Some people are interested in have a private server in order to play CS GO (Counter-Strike: Global Offensive) with their friends. The process is easy to follow. What is needed? A server Memory: At least 2GB RAM (I recommend 4GB) Disk: At least 15 GB os disk space CPU architecture: x86 (ARM not supported) A Valve account Create a new user First of all, it is important to create a new user in Linux in order to prevent CS GO server possible hacking to affect your Linux node....
Using a Linux Operating System, there is a high level of customization, depending on your preferences or needs. One important thing is to create aliases to the most common commands in order to optimize the time you use. In mi case, I love to use .. instead of cd .. or update to update all my Linux software pending updates. Here I put my list of aliases for Ubuntu (based on Debian) or CentOS (based on RHEL) distribution....
The Linux command line is a great tool. Today I’ll like to share a method to get Geographical IP information with one command, using curl and the tool of ipinfo.io. It is as easy to use this command: $ curl ipinfo.io/<IP Address> Here you have an example: You will have these parameters: IP City Region Country Loc (Coordinates) Org Postal Timezone If you want to get information about the Public IP Address you use to go to The Internet, you could execute the command this way:...
I have faced an issue in a web server using NGINX while trying to upload a file using wordpress. In the nginx error log I saw the error “Client intended to send too large body” in this entry: $ tail -f /var/log/nginx/*error*.log 2020/09/01 14:31:04 [error] 884#884: *126565 client intended to send too large body: 1195619 bytes, client: 55.173.250.46, server: test.com, request: "POST /wp-json/wp/v2/media?_locale=user HTTP/2.0", host: "test.com", referrer: "https://test.com/wp-admin/post.php?post=2460&action=edit" This limitation is defined in the NGINX web server, so I have to changed the configuration of the server:...
By default, Ubuntu desktop installation will provide DNS resolving configured, however in Ubuntu server installation avahi-daemon (or mdnsresponder) is needed to be installed to provide local LAN DNS resolution. In my case, i found the error “Temporary failure in name resolution” when I tried to resolve a machine of my LAN from Ubuntu. yvoictra@zoar:~$ ping erie.local ping: erie.local: Temporary failure in name resolution To solve this issue, there is no need to install a DNS server in the LAN....
The sudo command allows users to run programs with the security privileges of another user, by default, the root user. First if all, the user should be created in the system if it doesn’t exists yet. On Ubuntu systems, by default members of the group sudo are granted to sudo command access. Once the user is created, from root user, or a user with sudo access, you have to execute this command to add the user to sudo group....
Monitoring network traffic or bandwitdh usage is a must in a SysAdmin tasks. There are many differents tools to manage this monitoring, but one of my favorites is vnStat. The main advantage of this tool is the simplicity of its usage. Installation With Ubuntu, the way to install this tool is with apt. sudo apt install vnstat First steps Once installed, it is important to know which interfaces are going to be monitoried....