Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.
They are part of the environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location to store temporary files, or the HOME or USERPROFILE variable to find the directory structure owned by the user running the process.
They were introduced in their modern form in 1979 with Version 7 Unix, so are included in all Unixoperating system flavors and variants from that point onward including Linux and OS X. From PC DOS 2.0 in 1982, all succeeding Microsoft operating systems including Microsoft Windows, and OS/2 also have included them as a feature, although with somewhat different syntax, usage and standard variable names.
Details
In all Unix and Unix-like systems, each process has its own separate set of environment variables. By default, when a process is created, it inherits a duplicate environment of its parent process, except for explicit changes made by the parent when it creates the child. At the API level, these changes must be done between running fork and exec. Alternatively, from command shells such as bash, a user can change environment variables for a particular command invocation by indirectly invoking it via env or using the ENVIRONMENT_VARIABLE=VALUE <command> notation. All Unixoperating system flavors, DOS, and Windows have environment variables; however, they do not all use the same variable names. A running program can access the values of environment variables for configuration purposes.
Built environment, constructed surroundings that provide the setting for human activity, ranging from the large-scale civic surroundings to the personal places
Knowledge environment, social practices, technological and physical arrangements intended to facilitate collaborative knowledge building, decision making, inference or discovery
In computing:
Desktop environment, in computing, the graphical user interface to the computer
Environment is a 1927 Australian silent film about a woman who poses for a revealing painting. It was one of two films produced by Vaughan C. Marshall, the other one being Caught in the Net (1928).
Unlike many Australian silent films, a copy of it survives today.
Plot
Mary Garval is forced by poverty into posing semi-nude for a painting, L'Environment. The painter's assistant, Arthur, tries to seduce her but she runs away after finding out he is married.
Mary seeks refuge in the country and falls for a farmer, Jimmy. They get married but Arthur, seeking revenge, sends a Jewish friend to spy on them. He sends Jimmy a copy of the painting as a wedding present. Jimmy eventually forgives Mary and decides to destroy the painting, but discovers a lost will in the frame, which reveals Mary to be the heiress to a lost fortune.
The hacker culture is a subculture of individuals who enjoy the intellectual challenge of creatively overcoming and circumventing limitations of systems to achieve novel and clever outcomes. The act of engaging in activities (such as programming or other media) in a spirit of playfulness and exploration is termed "hacking". However, the defining characteristic of a hacker is not the activities performed themselves (e.g. programming), but the manner in which it is done: hacking entails some form of excellence, for example exploring the limits of what is possible, thereby doing something exciting and meaningful. Activities of playful cleverness can be said to have "hack value" and are termed "hacks" (examples include pranks at MIT intended to demonstrate technical aptitude and cleverness). The hacker culture originally emerged in academia in the 1960s around the Massachusetts Institute of Technology (MIT)'s Tech Model Railroad Club (TMRC) and MIT Artificial Intelligence Laboratory.
Ethical Hacking in 15 Hours - 2023 Edition - Learn to Hack! (Part 1)
0:00 - Introduction/whoami
6:43 - A Day in the Life of an Ethical Hacker
27:44 - Effective Notekeeping
34:27 - Important Tools
39:51 - Networking Refresher: Introduction
41:06 - IP Addresses
54:18 - MAC Addresses
57:35 - TCP, UDP, & the Three-Way Handshake
1:02:51 - Common Ports & Protocols
1:09:04 - The OSI Model
1:14:39 - Subnetting, Part 1
1:41:42 - Subnetting, Part 2
1:46:01 - Installing VMWare / VirtualBox
1:52:19 - Installing Kali Linux
1:57:55 - Configuring VirtualBox
2:01:17 - Kali Linux Overview
2:04:48 - Sudo Overview
2:10:05 - Navigating the File System
2:28:22 - Users & Privileges
2:45:21 - Common Network Commands
2:53:51 - Viewing, Creating, & Editing Files
3:00:16 - Starting and Stopping Services
3:06:38 - Installing and Updating Tools
3:18:35 - Bash Scripting
3:41:14 - Intro...
0:00 - Introduction/whoami
6:43 - A Day in the Life of an Ethical Hacker
27:44 - Effective Notekeeping
34:27 - Important Tools
39:51 - Networking Refresher: Int...
0:00 - Introduction/whoami
6:43 - A Day in the Life of an Ethical Hacker
27:44 - Effective Notekeeping
34:27 - Important Tools
39:51 - Networking Refresher: Introduction
41:06 - IP Addresses
54:18 - MAC Addresses
57:35 - TCP, UDP, & the Three-Way Handshake
1:02:51 - Common Ports & Protocols
1:09:04 - The OSI Model
1:14:39 - Subnetting, Part 1
1:41:42 - Subnetting, Part 2
1:46:01 - Installing VMWare / VirtualBox
1:52:19 - Installing Kali Linux
1:57:55 - Configuring VirtualBox
2:01:17 - Kali Linux Overview
2:04:48 - Sudo Overview
2:10:05 - Navigating the File System
2:28:22 - Users & Privileges
2:45:21 - Common Network Commands
2:53:51 - Viewing, Creating, & Editing Files
3:00:16 - Starting and Stopping Services
3:06:38 - Installing and Updating Tools
3:18:35 - Bash Scripting
3:41:14 - Intro to Python
3:43:37 - Strings
3:51:00 - Math
3:56:45 - Variables & Methods
4:07:05 - Functions
4:16:03 - Boolean Expressions and Relational Operators
4:24:37 - Conditional Statements
4:31:35 - Lists
4:43:48 - Tuples
4:45:59 - Looping
4:50:28 - Advanced Strings
5:03:08 - Dictionaries
5:09:32 - Importing Modules
5:15:30 - Sockets
5:23:11 - Building a Port Scanner
5:41:44 - User Input
5:50:22 - Reading and Writing Files
6:00:18 - Classes and Objects
6:08:10 - Building a Shoe Budget Tool
6:22:32 - The 5 Stages of Ethical Hacking
6:27:52 - Passive Recon Overview
6:35:29 - Identifying Our Target
6:39:06 - Discovering Email Addresses
6:54:59 - Breached Credentials Part 1
7:02:21 - Breached Credentials Part 2
7:14:18 - End Part 1
Part 2: https://youtu.be/sH4JCwjybGs
Full Course: https://academy.tcm-sec.com/p/practical-ethical-hacking-the-complete-course
All Course Resources/Links: https://github.com/Gr1mmie/Practical-Ethical-Hacking-Resources
Wireless Adapter: https://amzn.to/3WdyJLc
A shout out to all those involved with helping out on this course:
Alek - Creating "Academy", "Dev", and "Black Pearl" Capstone machines and a Discord Admin.
Dewalt, Yaseen, Likith, and Tuk - The five star support team.
Dwight - Discord Admin and awesome hacker.
Grimmie - Creation of SumRecon, lover of cookies, and a Discord Admin.
Joe Helle - Creating the "Blue" Capstone machine and the PNPT foothold. The OG support staff and a Discord Admin.
Lian - The OG Discord Admin with French Bulldogs I'd like to steal.
Rumham - Discord Admin, lover of rum and hams, and overall great guy.
❓Info❓
___________________________________________
Pentests & Security Consulting: https://tcm-sec.com
Get Trained: https://academy.tcm-sec.com
Get Certified: https://certifications.tcm-sec.com
Merch: https://merch.tcm-sec.com
Sponsorship Inquiries: [email protected]
📱Social Media📱
___________________________________________
Twitter: https://twitter.com/thecybermentor
Twitch: https://www.twitch.tv/thecybermentor
Instagram: https://instagram.com/thecybermentor
LinkedIn: https://www.linkedin.com/in/heathadams
Discord: https://discord.gg/tcm
💸Donate💸
___________________________________________
Like the channel? Please consider supporting me on Patreon:
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Support the stream (one-time): https://streamlabs.com/thecybermentor
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lg 32gk850g-b 32" Gaming Monitor:https://amzn.to/30C0qzV
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G.SKILL 32GB DDR4 RAM: https://amzn.to/2M638Zb
My Recording Equipment:
Panasonic G85 4K Camera: https://amzn.to/2Mk9vsf
Logitech C922x Pro Webcam: https://amzn.to/2LIRxAp
Aston Origin Microphone: https://amzn.to/2LFtNNE
Rode VideoMicro: https://amzn.to/309yLKH
Mackie PROFX8V2 Mixer: https://amzn.to/31HKOMB
Elgato Cam Link 4K: https://amzn.to/2QlicYx
Elgate Stream Deck: https://amzn.to/2OlchA5
*We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
0:00 - Introduction/whoami
6:43 - A Day in the Life of an Ethical Hacker
27:44 - Effective Notekeeping
34:27 - Important Tools
39:51 - Networking Refresher: Introduction
41:06 - IP Addresses
54:18 - MAC Addresses
57:35 - TCP, UDP, & the Three-Way Handshake
1:02:51 - Common Ports & Protocols
1:09:04 - The OSI Model
1:14:39 - Subnetting, Part 1
1:41:42 - Subnetting, Part 2
1:46:01 - Installing VMWare / VirtualBox
1:52:19 - Installing Kali Linux
1:57:55 - Configuring VirtualBox
2:01:17 - Kali Linux Overview
2:04:48 - Sudo Overview
2:10:05 - Navigating the File System
2:28:22 - Users & Privileges
2:45:21 - Common Network Commands
2:53:51 - Viewing, Creating, & Editing Files
3:00:16 - Starting and Stopping Services
3:06:38 - Installing and Updating Tools
3:18:35 - Bash Scripting
3:41:14 - Intro to Python
3:43:37 - Strings
3:51:00 - Math
3:56:45 - Variables & Methods
4:07:05 - Functions
4:16:03 - Boolean Expressions and Relational Operators
4:24:37 - Conditional Statements
4:31:35 - Lists
4:43:48 - Tuples
4:45:59 - Looping
4:50:28 - Advanced Strings
5:03:08 - Dictionaries
5:09:32 - Importing Modules
5:15:30 - Sockets
5:23:11 - Building a Port Scanner
5:41:44 - User Input
5:50:22 - Reading and Writing Files
6:00:18 - Classes and Objects
6:08:10 - Building a Shoe Budget Tool
6:22:32 - The 5 Stages of Ethical Hacking
6:27:52 - Passive Recon Overview
6:35:29 - Identifying Our Target
6:39:06 - Discovering Email Addresses
6:54:59 - Breached Credentials Part 1
7:02:21 - Breached Credentials Part 2
7:14:18 - End Part 1
Part 2: https://youtu.be/sH4JCwjybGs
Full Course: https://academy.tcm-sec.com/p/practical-ethical-hacking-the-complete-course
All Course Resources/Links: https://github.com/Gr1mmie/Practical-Ethical-Hacking-Resources
Wireless Adapter: https://amzn.to/3WdyJLc
A shout out to all those involved with helping out on this course:
Alek - Creating "Academy", "Dev", and "Black Pearl" Capstone machines and a Discord Admin.
Dewalt, Yaseen, Likith, and Tuk - The five star support team.
Dwight - Discord Admin and awesome hacker.
Grimmie - Creation of SumRecon, lover of cookies, and a Discord Admin.
Joe Helle - Creating the "Blue" Capstone machine and the PNPT foothold. The OG support staff and a Discord Admin.
Lian - The OG Discord Admin with French Bulldogs I'd like to steal.
Rumham - Discord Admin, lover of rum and hams, and overall great guy.
❓Info❓
___________________________________________
Pentests & Security Consulting: https://tcm-sec.com
Get Trained: https://academy.tcm-sec.com
Get Certified: https://certifications.tcm-sec.com
Merch: https://merch.tcm-sec.com
Sponsorship Inquiries: [email protected]
📱Social Media📱
___________________________________________
Twitter: https://twitter.com/thecybermentor
Twitch: https://www.twitch.tv/thecybermentor
Instagram: https://instagram.com/thecybermentor
LinkedIn: https://www.linkedin.com/in/heathadams
Discord: https://discord.gg/tcm
💸Donate💸
___________________________________________
Like the channel? Please consider supporting me on Patreon:
https://www.patreon.com/thecybermentor
Support the stream (one-time): https://streamlabs.com/thecybermentor
My Build:
lg 32gk850g-b 32" Gaming Monitor:https://amzn.to/30C0qzV
darkFlash Phantom Black ATX Mid-Tower Case: https://amzn.to/30d1UW1
EVGA 2080TI: https://amzn.to/30d2lj7
MSI Z390 MotherBoard: https://amzn.to/30eu5TL
Intel 9700K: https://amzn.to/2M7hM2p
G.SKILL 32GB DDR4 RAM: https://amzn.to/2M638Zb
My Recording Equipment:
Panasonic G85 4K Camera: https://amzn.to/2Mk9vsf
Logitech C922x Pro Webcam: https://amzn.to/2LIRxAp
Aston Origin Microphone: https://amzn.to/2LFtNNE
Rode VideoMicro: https://amzn.to/309yLKH
Mackie PROFX8V2 Mixer: https://amzn.to/31HKOMB
Elgato Cam Link 4K: https://amzn.to/2QlicYx
Elgate Stream Deck: https://amzn.to/2OlchA5
*We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
0:00 - Introduction/whoami
6:43 - A Day in the Life of an Ethical Hacker
27:44 - Effective Notekeeping
34:27 - Important Tools
39:51 - Networking Refresher: Introduction
41:06 - IP Addresses
54:18 - MAC Addresses
57:35 - TCP, UDP, & the Three-Way Handshake
1:02:51 - Common Ports & Protocols
1:09:04 - The OSI Model
1:14:39 - Subnetting, Part 1
1:41:42 - Subnetting, Part 2
1:46:01 - Installing VMWare / VirtualBox
1:52:19 - Installing Kali Linux
1:57:55 - Configuring VirtualBox
2:01:17 - Kali Linux Overview
2:04:48 - Sudo Overview
2:10:05 - Navigating the File System
2:28:22 - Users & Privileges
2:45:21 - Common Network Commands
2:53:51 - Viewing, Creating, & Editing Files
3:00:16 - Starting and Stopping Services
3:06:38 - Installing and Updating Tools
3:18:35 - Bash Scripting
3:41:14 - Intro to Python
3:43:37 - Strings
3:51:00 - Math
3:56:45 - Variables & Methods
4:07:05 - Functions
4:16:03 - Boolean Expressions and Relational Operators
4:24:37 - Conditional Statements
4:31:35 - Lists
4:43:48 - Tuples
4:45:59 - Looping
4:50:28 - Advanced Strings
5:03:08 - Dictionaries
5:09:32 - Importing Modules
5:15:30 - Sockets
5:23:11 - Building a Port Scanner
5:41:44 - User Input
5:50:22 - Reading and Writing Files
6:00:18 - Classes and Objects
6:08:10 - Building a Shoe Budget Tool
6:22:32 - The 5 Stages of Ethical Hacking
6:27:52 - Passive Recon Overview
6:35:29 - Identifying Our Target
6:39:06 - Discovering Email Addresses
6:54:59 - Breached Credentials Part 1
7:02:21 - Breached Credentials Part 2
7:14:18 - End Part 1
Part 2: https://youtu.be/sH4JCwjybGs
Full Course: https://academy.tcm-sec.com/p/practical-ethical-hacking-the-complete-course
All Course Resources/Links: https://github.com/Gr1mmie/Practical-Ethical-Hacking-Resources
Wireless Adapter: https://amzn.to/3WdyJLc
A shout out to all those involved with helping out on this course:
Alek - Creating "Academy", "Dev", and "Black Pearl" Capstone machines and a Discord Admin.
Dewalt, Yaseen, Likith, and Tuk - The five star support team.
Dwight - Discord Admin and awesome hacker.
Grimmie - Creation of SumRecon, lover of cookies, and a Discord Admin.
Joe Helle - Creating the "Blue" Capstone machine and the PNPT foothold. The OG support staff and a Discord Admin.
Lian - The OG Discord Admin with French Bulldogs I'd like to steal.
Rumham - Discord Admin, lover of rum and hams, and overall great guy.
❓Info❓
___________________________________________
Pentests & Security Consulting: https://tcm-sec.com
Get Trained: https://academy.tcm-sec.com
Get Certified: https://certifications.tcm-sec.com
Merch: https://merch.tcm-sec.com
Sponsorship Inquiries: [email protected]
📱Social Media📱
___________________________________________
Twitter: https://twitter.com/thecybermentor
Twitch: https://www.twitch.tv/thecybermentor
Instagram: https://instagram.com/thecybermentor
LinkedIn: https://www.linkedin.com/in/heathadams
Discord: https://discord.gg/tcm
💸Donate💸
___________________________________________
Like the channel? Please consider supporting me on Patreon:
https://www.patreon.com/thecybermentor
Support the stream (one-time): https://streamlabs.com/thecybermentor
My Build:
lg 32gk850g-b 32" Gaming Monitor:https://amzn.to/30C0qzV
darkFlash Phantom Black ATX Mid-Tower Case: https://amzn.to/30d1UW1
EVGA 2080TI: https://amzn.to/30d2lj7
MSI Z390 MotherBoard: https://amzn.to/30eu5TL
Intel 9700K: https://amzn.to/2M7hM2p
G.SKILL 32GB DDR4 RAM: https://amzn.to/2M638Zb
My Recording Equipment:
Panasonic G85 4K Camera: https://amzn.to/2Mk9vsf
Logitech C922x Pro Webcam: https://amzn.to/2LIRxAp
Aston Origin Microphone: https://amzn.to/2LFtNNE
Rode VideoMicro: https://amzn.to/309yLKH
Mackie PROFX8V2 Mixer: https://amzn.to/31HKOMB
Elgato Cam Link 4K: https://amzn.to/2QlicYx
Elgate Stream Deck: https://amzn.to/2OlchA5
*We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer.
They are part of the environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location to store temporary files, or the HOME or USERPROFILE variable to find the directory structure owned by the user running the process.
They were introduced in their modern form in 1979 with Version 7 Unix, so are included in all Unixoperating system flavors and variants from that point onward including Linux and OS X. From PC DOS 2.0 in 1982, all succeeding Microsoft operating systems including Microsoft Windows, and OS/2 also have included them as a feature, although with somewhat different syntax, usage and standard variable names.
Details
In all Unix and Unix-like systems, each process has its own separate set of environment variables. By default, when a process is created, it inherits a duplicate environment of its parent process, except for explicit changes made by the parent when it creates the child. At the API level, these changes must be done between running fork and exec. Alternatively, from command shells such as bash, a user can change environment variables for a particular command invocation by indirectly invoking it via env or using the ENVIRONMENT_VARIABLE=VALUE <command> notation. All Unixoperating system flavors, DOS, and Windows have environment variables; however, they do not all use the same variable names. A running program can access the values of environment variables for configuration purposes.