Friday 31 December 2021

How to Install Java 11.0.13 on CentOS 8



Java 11.0.13  package is available in CentOS 8 base repositories to download and install. The java runtime environment package and its dependencies can be installed using dnf CentOS 8 package management tool.

How to Install Oracle Java 17 LTS on CentOS 8



Oracle Java 17 LTS is the latest version of Oracle Java which is released for long-term support for the Java SE platform. JDK 17 binaries are not available in CentOS 8 Base and App Stream.It can be installed by downloading RPM packages from Oracle official sites.

How to Install PHP 8.1 on CentOS 8



PHP is free and open source programming language. It is widely used Linux based system to write application. The latest PHP packages are not available in CentOS 8 AppSteam repository.

How to Install PHP 8.0 on CentOS 8



PHP is free and open source programming language. It is widely used Linux based system to write application. The latest PHP packages are not available in CentOS 8 AppSteam repository.

How to Install REMI Repository on CentOS 8



REMI Repository is a third-party repository that provides the latest versions of software for Enterprise Linux, CentOS and for other clones. The REMI repository works along with EPEL repository to resolve any dependency for packages.

Thursday 30 December 2021

How to Install/Update Security Patches on CentOS 7 using YUM



YUM is a tool for packages management and helps to install/update/upgrade any package with its dependencies from a centralized repository. yum-plugin-security this is a yum plugin which provides to install security patches on the system.

Friday 24 December 2021

How to Boot CentOS 8 in Rescue Mode Step by Step



Rescue mode provide facility to boot a small CentOS 8 Linux environment from boot method using ISO Image or bootable media. CentOS 7 and CentOS 8 steps are quite similar to boot in rescue mode.
 
Step 1. Downloading ISO Image: Download ISO image from the Centos official site and boot the virtual machine from the downloaded ISO image.

Thursday 23 December 2021

How to Boot CentOS 7 in Rescue Mode Step by Step



Rescue mode provide facility to boot a small CentOS 7 Linux environment from boot method using ISO Image or bootable media.
 
Step 1. Downloading ISO Image: Download ISO image from the CentOS official site and boot the virtual machine from the downloaded ISO image.

Monday 19 July 2021

How to Integrate CentOS 7 with Windows AD - Realmd



Realmd widely used to discover and joining objects into windows domain controller. CentOS7 machines can be integrated with AD (Active Directory) for centralized authentications and users/groups level access can be managed through centralized AD controller.

How To Configure DNS (BIND) Server on CentOS 7



DNS (Domain Name System)/BIND (Berkeley Internet Name Domain) is most widely used DNS Server. DNS is a client server protocol that provides Domain name resolution to its associate IP address and IP address to Domain name. Its available in CentOS7 base repository.

Sunday 11 July 2021

How to install Java 11 on CentOS 8



Java 11  package is available in CentOS 8 base repositories to download and install. The java runtime environment package and its dependencies can be installed using dnf CentOS8 package management tool.

How to resolve “-bash: nmap: command not found” on CentOS 8



By default, nmap command is not available in CentOS8 minimal installation and other Linux distributions. The nmap command line utility is used for port scanning and services which are running on local or remote machine in a network. 

How to install Java9/jdk1.9 on CentOS 8 – RPM File



Java 9/jdk1.9 packages are not available in CentOS8 base repositories to download and install. The version file can be downloaded and installed from official site.

Saturday 10 July 2021

How to install Java9/jdk1.9 on CentOS 7 – RPM File



Java 9/jdk1.9 packages are not available in CentOS 7 base repositories to download and install. The version file can be downloaded and installed from official site.

Friday 9 July 2021

How to resolve “-bash: nmap: command not found” on CentOS 7



By default, nmap command is not available in CentOS 7 minimal installation and other Linux distributions. The nmap command line utility is used for port scanning and services which are running on local or remote machine in a network.

Sunday 9 May 2021

How to Reduce lvm partition in CentOS 7



Sometimes when we are facing issue with high space utilization of the disk in Linux system, then we can make some space by reducing the lvm partition which have unused space available if hard disk partitioned in lvm. Reducing the lvm volume cannot be done online, the volume should be unmounted while reducing. Reducing the logical volume is the risk of data lose and it is always recommended to make a backup of data before reducing the volume. 

Friday 23 April 2021

How to Install yum-utils on CentOS 8



The yum-utils is an additional package of yum that provides a collection of utilities and commands to manipulate repositories and extended package management. Yum-utils can be installed from CentOS 8 default BaseOS repository.

Friday 19 March 2021

How To Create User with Gecos/Comment and Add in a Group in CentOS 7



A new user account is created with a group. The group name is same as account name and the user is the only member of this group. The -g [Primary Group] and -G [Secondary Group] options allow to add the user in primary and secondary group and the -c (--comment) option allows to add a short description/User Full Name/GECOS for the new user.

Monday 18 January 2021

How To Find Operating System Installation Date and Time in CentOS 8




Sometimes, there is a requirement to know operating system installation/build information. The tune2fs Linux command uses to adjust various tunable file system parameters on Linux ext2, ext3, or ext4 file systems. This command also helps to find out the date and time of operating system installation.