In this article, you will learn How To Install IPtables On CentOS 8/7 RHEL 8/7. FirewallD provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. Starting from CentOS 7,… Continue Reading
In this article you will learn how to fix Error: Failed to download metadata for repo ‘appstream’: Cannot prepare internal mirrorlist: No URLs in mirrorlist. If you try update CentOS 8 with dnf update or yum update commands you will… Continue Reading
Here is basic IPTables Configuration Example Shell Script. This IPTables basic rules will configure IPTables to open HTTP/HTTPS, PING for whole world, and SSH for your IP. Blocks everything else. GitHub Install iptables persistent package To make IPTables rules persistent… Continue Reading
In this article I will show very basic shell Script to Delete Log Files in Linux and schedule logs deletion using a cron. Linux Log Files The Linux operating system and running applications constantly generate various types of messages that… Continue Reading
In this article you will learn how to fix the Linux error: GPT PMBR size mismatch will be corrected by write after executing fdisk command. The problem can happen when the partition table was set up for a smaller disk… Continue Reading
In this article you will learn how to resize Linux partition from Command Line on virtual machine (VMware, Proxmox, AWS, ..). Тhis example is applicable for increase only for NON LVM partitions. In our example we will use Debian, but… Continue Reading
By default AWS Amazon Linux 2 will install PHP 5.4 if you run: yum install php. In this article you will learn how to Install PHP 7.4 On Amazon Linux 2 step by step. Also how to install PHP 8.0… Continue Reading
In this article I will show how to find text in a file in Linux using grep command. Grep searches for patterns in each file. Patterns is one or patterns separated by newline characters, and grep prints each line that… Continue Reading
In this article I will show Raspberry Pi 4 Ubuntu WiFi Setup from command line. Identify The WiFi Card Name In Raspberry Pi 4 Ubuntu Raspberry Pi 4 has hardware WiFi card already onboard, but you can add other USB… Continue Reading
In this article you will learn how to fix error: This version of ChromeDriver only supports Chrome version 97 when you developing programs in Python. The error might look like: As you see in our example I have different versions… Continue Reading