Understanding Linux File Systems: ext4, XFS, Btrfs and More
Linux is a widely used open source operating system. It supports many different types of file systems. Each filesystem has its own advantages and limitations.
100 linux useful commands
100 useful linux commands, that may be handy in case of any trouble shooting or user/admin related activities
Veritas Volume Manager (VxVM) cheatsheet
VxVM cheatsheet
Veritas Volume Manager (VxVM) enables us to manage physical drives as logical devices. Applications and the operating system see a veritas disk/volume as a physical disc with configurable file systems, databases, and other managed data objects.
For computer and Storage Area Network (SAN) systems, VxVM offers simple online disc storage management. In order to boost I/O throughput and safeguard against hardware failure, VxVM can be configured to support the Redundant Array of Independent Disks (RAID) concept. Moreover, VxVM has capabilities that improve disc failure quick recovery and fault tolerance.
Multipass Installer for Mac/Linux
Ubuntu VM runs on Windows/Mac/Linux. Multipass can launch and run virtual machines and configure them with cloud-init like a public cloud. Prototype your cloud launches locally for free. It acts as a similar to Oracle Virtual Box or Docker engine
Troubleshooting commands in Linux
basic troubleshooting commands, whenever customer is telling that filesystem full or system is very slow
Mastering journalctl for System Logs
syslogs which gets messages sent in systemd-journald and stored the data in the disk. To view the systemd messages execute journalctl and can be used with additional parameters. In this post we are going to see quick howto use journalctl command and how to use it
Simple IP calculator Subnet using korn shell script v1.0
In this post we are going to see how to write a script to find the subnet calculator, we are using korn shell to write. the interpreter we are going to use /bin/ksh, the korn shell supports MacOS, Linux and Unix flavours. This will be helpful for assign the ip address to the server ip planning.
Shell script basics
UNIX shell programs executes the user command. User can enter like a command directly or executes a set of commands from a file called as a script file or program. Shell scrips are not compiled, it is interpreted executes line by line.
Git version control (latest 2.28.0) how to
In general the version control is used to preserve the changes made in a software codes, documents and other formats. For example if a group people are accessing the documents like release notes or instructions, if someone edits, so that we can find what he has changed from the previous versions, so that we can able to restore the changes made and back to original. we have the history of documents that are stored in version controlled.
dnf Package manager utility RHEL / CentOS 8 / Fedora
dnf or Dandified YUM utility used in since Fedora 18, RHEL / CentOS8, In this blog we are going to see dnf features and how to use. dnf package manager utility is used to install / remove / update package and dependencies, the dnf repolist command will display the available repos in the dnf repository