LVM HOWTO

How To Use LVM To Manage Storage Devices on Ubuntu 16.04

Introduction

LVM, or Logical Volume Management, is a storage device management technology that gives users the power to pool and abstract the physical layout of component storage devices for easier and flexible administration. Utilizing the device mapper Linux kernel framework, the current iteration, LVM2, can be used to gather existing storage devices into groups and allocate logical units from the combined space as needed.

AutomaticallyMountPartitions

mount

 - mount a filesystem (used for general mount info too):

df

 - report file system disk space usage

lsblk

 - list block devices

How do I determine the total size of a directory (folder) from the command line?

The command 

du

du -hs /path/to/directory

  -h is to get the numbers "human readable", e.g. get 140M instead of 143260 (size in KBytes)-s is for summary (otherwise you'll get not only the size of the folder but also for everything inthe folder separately)  

InstallingANewHardDrive

Terminal method of formatting storage drive

How To Partition and Format Storage Devices in Linux

https://help.ubuntu.com/community/UsingUUID

How to Resize Ubuntu Root Partition

root@Docker01:~# cfdisk 

How do I determine the total size of a directory (folder) from the command line?

• ls -l, which only displays the size of the individual files in a directory, nor
• df -h, which only displays the free and used space on my disks.
• 
  

The command du "summarizes disk usage of each FILE, recursively for directories," e.g.,

du -hs /path/to/directory

• -h is to get the numbers "human readable", e.g. get 140M instead of 143260 (size in KBytes)
• -s is for summary (otherwise you'll get not only the size of the folder but also for everything inthe folder separately)

As you're using -h you can sort the human readable values using

du -sh | sort -h

The -h flag on sort will take into consideration "Human Readable" size values.

If want to avoid recursively listing all files and directories, you can supply the --max-depthparameter to limit how many items are displayed. Most commonly, --max-depth=1

du -sh --max-depth=1 /path/to/directory