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Linux Server Managment
I need to check RAID configuration in Linux. How do you check your current software RAID configuration in a Linux-based server powered by RHEL/CentOS or Debian/Ubuntu Linux?Introduction – Linux supports both software and hardware based RAID devices. This page shows how to check software-based RAID devices created from two or more real block devices (hard…
I read that Let’s Encrypt is a free, automated, and open certificate for web server and other usages. How do I secure Apache with Let’s Encrypt Certificates on RHEL 8?Introduction – Let’s Encrypt is a free, automated, and open certificate authority for your website powered by Apache web server. This page shows how to use…
How do I set up a LAMP stack on RHEL 8 cloud server or VPS or bare metal server? How can I install Linux, Apache, MySQL/MariaDB, PHP (LAMP) stack On RHEL (Red Hat Enterprise Linux) 8?Introduction – A LAMP stack is nothing but a group of popular software installed to build and run dynamic websites…
How do I check if a file is empty or not using bash or ksh shell script under a UNIX / Linux / macOS / OS X / BSD family of operating systems? How do I check if a file is empty in Bash?You can use the find command and other options as follows. The…
I am a new CentOS 7 Linux desktop user. I need to use Nvidia software for my video editing software and other purposes. How do I install the Nvidia driver on CentOS 7 Linux?Introduction: Nvidia drivers used for gaming, video editing, visualization, artificial intelligence and more. This page shows how to install Nvidia GPU drivers…
How do I setup a firewall with UFW (uncomplicated firewall) on an Ubuntu Linux 16.04 LTS server to restrict traffic on my personal web-server that hosts my pictures and blogs for my family members?UFW is an acronym for uncomplicated firewall. One can use it for managing a Linux firewall and aims to provide an easy…
I am a new Red Hat Enterprise Linux (RHEL) 8 user. How do I install wget on RHEL 8 using the dnf command?Introduction – GNU Wget is a free and open source software package for getting files using HTTP, HTTPS, and FTP Internet protocols. The GNU/wget might not be installed on your RHEL 8 based…
It is official now. Microsoft is throwing away old code base of Edge browser and making next version of Edge browser on top of Chromium. The open source project behind Google Chrome is known as Chromium. Microsoft is building a Chromium browser to replace Edge on Windows 10 on both x86 and ARM-based systems. Microsoft…
I am a new Linux system user. How do I get the exit code of a command? How do I get the exit code or status of Linux or Unix shell command and store it into a shell variable?Introduction – Each Linux or Unix shell command returns a status when it terminates normally or abnormally….
I am a new Red Hat Enterprise Linux sysadmin. How do I set up a firewall using FirwallD on RHEL 8?Introduction – A Linux firewall used to protect your workstation or server from unwanted traffic. You can set up rules to either block traffic or allow through. RHEL 8 comes with a dynamic, customizable host-based…
How do I install wget the non-interactive network downloader under FreeBSD operating systems? How do I install wget on FreeBSD 8.x/9.x/10.x/11.x/12.x?You can use any one of the following method to install GNU Wget non-interactive program on a FreeBSD operating system. The wget used to download files from the Internet. It supports HTTP, HTTPS, and FTP…
How do I install PostgreSQL relational database management on RHEL 8 using the command line? How do I install and setup PostgreSQL on RHEL 8 server using application streams?Introduction: PostgreSQL is a free and open source ORDBMS ( object-relational database management system). It is the world’s most advanced open source database. This page shows how…
I set up SSH keys on a Linux or Unix as per my project needs and cloud hosting providers. I also new to Ansible IT automation and DevOps tool. My management node has keys for Linode, AWS/EC2 and Google cloud. How do I set up and tell Ansible to use different ssh keys? How do…
I am a new MariaDB and RHEL 8 user. How do I install MariaDB on RHEL 8 server using the yum command?Introduction – MariaDB is a free and open source database management system. It acts as a drop replacement for Oracle MySQL server. It is a community drive and developed branch of Oracle MySQL. MariaDB…
FreeBSD is a free and open source operating system. The NFS (Network File System) is a server and client application that turn FreeBSD into a file sharing server. Users can upload or update files on a remote NFS server. NFS is standard on NAS (network attached storage) devices or sharing data for web servers. A…
I am a new OpenSUSE Linux server user. How do I upgrade and update OpenSUSE Linux software and kernel from the CLI? How do I use the command line tool to upgrade your system to the latest version of openSUSE software and kernel?Introduction : You can use zypper or yast2 command for managing and updating…
I would like to reduce the load on my MariaDB/MySQL/PostgreSQL server using memcached. How do I install and configure memcached server on Ubuntu Linux 18.04 LTS?Introduction : Memcached is a high-performance, distributed memory object caching server. It is free and open source software intended for use in speeding up dynamic web applications by mitigating database…
How do I find out my public IP address on the Linux and OS X Unix command line to use with my own bash shell script without using third party web site? Is there command-line option which will show my dynamic IP address on a Ubuntu or Fedora Linux?There are many ways to find out…
How do I setup a firewall with UFW (uncomplicated firewall) on an Ubuntu Linux 18.04 LTS server to restrict traffic on my personal Ubuntu web-server that hosts my cat’s blog? How do I set up a firewall with UFW on Ubuntu 18.04 LTS?Introduction : UFW is an acronym for an uncomplicated firewall. Securing a network…
How do I use the grep command with regular expressions on a Linux and Unix-like operating systems? How do I use grep and regular expressions to search for text/ words in Linux?Linux comes with GNU grep, which supports extended regular expressions. GNU grep is the default on all Linux systems. The grep command is used…