Hands-on Guide for Linux /tmp file and folders

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Learn how Linux file system works!

Linux /tmp 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

1.20. /tmp

This directory contains mostly files that are required temporarily. Many programs use this to create lock files and for temporary storage of data. Do not remove files from this directory unless you know exactly what you are doing! Many of these files are important for currently running programs and deleting them may result in a system crash. Usually it won't contain more than a few KB anyway. On most systems, this directory is cleared out at boot or at shutdown by the local system. The basis for this was historical precedent and common practice. However, it was not made a requirement because system administration is not within the scope of the FSSTND. For this reason people and programs must not assume that any files or directories in /tmp are preserved between invocations of the program. The reasoning behind this is for compliance with IEEE standard P1003.2 (POSIX, part 2).

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