Learn, Solve & Master Python, Linux, SQL, ML & DevOps
Linux is the foundation of modern DevOps, powering cloud servers and CI/CD pipelines. In 2026, mastering essential Linux skills is critical for DevOps engineers to stay relevant and effective.
Learn proven best practices to manage Linux LVM without downtime. Safely extend volumes, improve performance, and maintain uptime in production systems.
Confused between fdisk and parted? This guide explains the key differences, use cases, and best practices to help Linux users choose the right disk partitioning tool with confidence.
New to Linux administration? Discover the most common Linux admin mistakes and practical ways to avoid them for stable, secure systems.
Learn how to install Red Hat Enterprise Linux (RHEL) 9.x in Oracle VirtualBox with this beginner-friendly, step-by-step guide.
Extend an existing LV using the unused free space already available inside the volume group, without adding a new disk and without system downtime.
Safely shrink one LVM partition and reallocate the freed space to another logical volume in the same volume group.
Using fdisk and parted to Create LVM Partitions (When Not Using a Whole Disk)
Learn the safe and recommended ways to grant sudo privileges to a Linux user using visudo or the wheel group, without risking sudoers file corruption or system lockout.
Learn how to fix the “device is busy” error when unmounting a filesystem in Linux using lsof and fuser, and safely release active processes without rebooting.
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