A collection of system administration hints and tips, tricks and articles for the Linux operating system in all its variants.

Latest posts

LVM Volume Groups

2 minute read    3131 visits.

A volume group (vg) is an abstraction layer between block devices and logical volumes. The commands used to manage a volume group start with vg

LVM Physical Volumes

3 minute read    3184 visits.

A physical volume (pv) is any block device (a disk, a partition, a RAID device, an iSCSI device, etc.)

Private and public key pairs for SSH

3 minute read    2445 visits.

SSH has a key management capacity and related agents.When configured with public key authentication, your key proves your identity to remote SSH hosts

SSH configuration and security best practices

2 minute read    3267 visits.

Here is a list of processes and configurations that you can use to tighten and enhance SSH security with regard to remote host access

SSH related commands

1 minute read    1973 visits.

A short article which provides a brief description for ssh related commands

Recovering from a lost root password under Linux

1 minute read    3442 visits.

This article provides a quick procedure on how to recover a lost root password frm virtually any version of Linux which uses the GRUB boot loader.