Hands-on Guide for Linux /root file and folders

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Learn how Linux file system works!

Linux /root and its architecture!

Guide outline

1.1. Overview
1.2. The Root Directory
1.3. /bin
1.4. /boot
1.5. /dev
1.6. /etc
1.7. /home
1.8. /initrd
1.9. /lib
1.10. /lost+found
1.11. /media
1.12. /mnt
1.13. /opt
1.14. /proc
1.15. /root
1.16. /sbin
1.17. /usr
1.18. /var
1.19. /srv
1.20. /tm
2. Glossary

Additional Linux Resources

Here is a list of resources for learning Linux:

Resources for System Administrators

Linux System Admin Guide- What is Linux Operating System and how it works
Linux System Admin Guide- What are Directory Tree and Filesystem Hierarchy in Linux
Linux System Admin Guide- Introduction to Linux File Systems for System Admins
Linux System Admin Guide- Overview of Linux Virtual Memory and Disk Buffer Cache
Linux System Admin Guide- Best Practices for Monitoring Linux Systems
Linux System Admin Guide- Best Practices for Performing Linux Boots and Shutdowns
Linux System Admin Guide- Best Practices for Making and Managing Backup Operations

Resources for Linux Kernel Programmers

How Linux Operating System Memory Management works
Comprehensive Review of Linux Kernel Operating System Processes
Comprehensive Review of Linux File System Architecture and Management
What are mechanisms behind Linux Kernel task management
How Linux Kernel Sources and Functions work
Comprehensive look at how Linux Data Structures work

Hands-on Linux classes

Introduction to Linux and Shell programming
Introduction to Linux System Administration

Linux Operating System Distributions

Comprehensive list of all Linux OS distributions
Comprehensive list of all special purpose Linux distributions
Comprehensive list of all secure Linux distributions for cybersecurity professionals

1.15. /root

This is the home directory of the System Administrator, 'root'. This may be somewhat confusing ('root on root') but in former days, '/' was root's home directory (hence the name of the Administrator account). To keep things tidier, 'root' got his own home directory. Why not in '/home'? Because '/home' is often located on a different partition or even on another system and would thus be inaccessible to 'root' when - for some reason - only '/' is mounted.

The FSSTND merely states that this is the recommended location for the home directory of 'root'. It is left up to the end user to determine the home directory of 'root'. However, the FSSTND also says that:

  If the home directory of the root account is not stored on the root
  partition it will be necessary to make certain it will default to 
  / if it can not be located.
  We recommend against using the root account for tasks that can be
  performed as an unprivileged user, and that it be used solely for 
  system administration. For this reason, we recommend that subdirectories
  for mail and other applications not appear in the root account's home
  directory, and that mail for administration roles such as root, postmaster,
  and webmaster be forwarded to an appropriate user.

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