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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.
Learn how to find which process is using a specific port in Linux using ss, lsof, and netstat. Quickly identify blocked or occupied ports and stop conflicting services.
Learn how to mount an ISO file in Linux and configure it as a local package repository for offline systems, secure environments, and servers without internet access.
Reset a forgotten Linux root password safely using the GRUB rd.break method without reinstalling the operating system.
Safely extend an LVM partition by adding a new disk, creating a physical volume, extending the volume group and logical volume, and growing the filesystem online without downtime or reboot.
SSH login pauses for several seconds before asking for a password due to GSSAPI or Kerberos authentication. Learn how to quickly fix slow SSH logins safely.
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