How do the kernel, OS, system libraries and installed programs work together?
I've looked around, and haven't found an answer to my question: How do the kernel, OS, and programs fit together? So, I get that the Linux kernel is the software responsible for extremely low-level management of system resources in a Linux machine. And, I understand that the OS provides an environment for app developers to use to reduce redundant code, and make it easier to write since it abstracts away the hardware and provides nice APIs for developers to write code against. But, I was just wondering how the apps actually run. In other words, if I click on a program on my desktop, what's the process for taking that program and telling the CPU to execute that code? Does it just point to that space on the disk, or what? Sorry if the question is too broad, but I don't really know how to make this question more precise and/or useful.
linux
asked 2 hours ago
Adi YAdi Y
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I've looked around, and haven't found an answer to my question: How do the kernel, OS, and programs fit together? So, I get that the Linux kernel is the software responsible for extremely low-level management of system resources in a Linux machine. And, I understand that the OS provides an environment for app developers to use to reduce redundant code, and make it easier to write since it abstracts away the hardware and provides nice APIs for developers to write code against. But, I was just wondering how the apps actually run. In other words, if I click on a program on my desktop, what's the process for taking that program and telling the CPU to execute that code? Does it just point to that space on the disk, or what? Sorry if the question is too broad, but I don't really know how to make this question more precise and/or useful.
linux
asked 2 hours ago
Adi YAdi Y
1
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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You need basic C programming training, basic knowledge about how x86 architecture is like, basic knowledge about assembly language, and basic knowledge about how a Linux system is layered. Apparently you don't have any of them, so it's impossible for you to get an answer. I'll Flag for the reason you already know.
– 炸鱼薯条德里克
2 hours ago
add a comment |
I've looked around, and haven't found an answer to my question: How do the kernel, OS, and programs fit together? So, I get that the Linux kernel is the software responsible for extremely low-level management of system resources in a Linux machine. And, I understand that the OS provides an environment for app developers to use to reduce redundant code, and make it easier to write since it abstracts away the hardware and provides nice APIs for developers to write code against. But, I was just wondering how the apps actually run. In other words, if I click on a program on my desktop, what's the process for taking that program and telling the CPU to execute that code? Does it just point to that space on the disk, or what? Sorry if the question is too broad, but I don't really know how to make this question more precise and/or useful.
linux
asked 2 hours ago
Adi YAdi Y
1
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I've looked around, and haven't found an answer to my question: How do the kernel, OS, and programs fit together? So, I get that the Linux kernel is the software responsible for extremely low-level management of system resources in a Linux machine. And, I understand that the OS provides an environment for app developers to use to reduce redundant code, and make it easier to write since it abstracts away the hardware and provides nice APIs for developers to write code against. But, I was just wondering how the apps actually run. In other words, if I click on a program on my desktop, what's the process for taking that program and telling the CPU to execute that code? Does it just point to that space on the disk, or what? Sorry if the question is too broad, but I don't really know how to make this question more precise and/or useful.
linux
linux
asked 2 hours ago
Adi YAdi Y
1
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
Adi YAdi Y
1
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
Adi YAdi Y
1
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
Adi YAdi Y
1
asked 2 hours ago
Adi YAdi Y
1
1
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Adi Y is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
You need basic C programming training, basic knowledge about how x86 architecture is like, basic knowledge about assembly language, and basic knowledge about how a Linux system is layered. Apparently you don't have any of them, so it's impossible for you to get an answer. I'll Flag for the reason you already know.
– 炸鱼薯条德里克
2 hours ago
add a comment |
You need basic C programming training, basic knowledge about how x86 architecture is like, basic knowledge about assembly language, and basic knowledge about how a Linux system is layered. Apparently you don't have any of them, so it's impossible for you to get an answer. I'll Flag for the reason you already know.
– 炸鱼薯条德里克
2 hours ago
You need basic C programming training, basic knowledge about how x86 architecture is like, basic knowledge about assembly language, and basic knowledge about how a Linux system is layered. Apparently you don't have any of them, so it's impossible for you to get an answer. I'll Flag for the reason you already know.
– 炸鱼薯条德里克
2 hours ago
You need basic C programming training, basic knowledge about how x86 architecture is like, basic knowledge about assembly language, and basic knowledge about how a Linux system is layered. Apparently you don't have any of them, so it's impossible for you to get an answer. I'll Flag for the reason you already know.
– 炸鱼薯条德里克
2 hours ago
add a comment |
1 Answer
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exec and fork are the two primary parts of the OS Api (called system calls) which make this process (as you call it) function -- the "process" namely by which the kernel initiates user processes.
More to the story of course! Will uncover when you ask more specific questions.
Slightly simpler if you rephrase in terms of "what does bash do when I type a command"
answered 2 hours ago
RusiRusi
415
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1 Answer
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exec and fork are the two primary parts of the OS Api (called system calls) which make this process (as you call it) function -- the "process" namely by which the kernel initiates user processes.
More to the story of course! Will uncover when you ask more specific questions.
Slightly simpler if you rephrase in terms of "what does bash do when I type a command"
answered 2 hours ago
RusiRusi
415
add a comment |
exec and fork are the two primary parts of the OS Api (called system calls) which make this process (as you call it) function -- the "process" namely by which the kernel initiates user processes.
More to the story of course! Will uncover when you ask more specific questions.
Slightly simpler if you rephrase in terms of "what does bash do when I type a command"
answered 2 hours ago
RusiRusi
415
add a comment |
exec and fork are the two primary parts of the OS Api (called system calls) which make this process (as you call it) function -- the "process" namely by which the kernel initiates user processes.
More to the story of course! Will uncover when you ask more specific questions.
Slightly simpler if you rephrase in terms of "what does bash do when I type a command"
answered 2 hours ago
RusiRusi
415
exec and fork are the two primary parts of the OS Api (called system calls) which make this process (as you call it) function -- the "process" namely by which the kernel initiates user processes.
More to the story of course! Will uncover when you ask more specific questions.
Slightly simpler if you rephrase in terms of "what does bash do when I type a command"
answered 2 hours ago
RusiRusi
415
edited 2 hours ago
answered 2 hours ago
RusiRusi
415
answered 2 hours ago
RusiRusi
415
answered 2 hours ago
RusiRusi
415
415
add a comment |
add a comment |
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You need basic C programming training, basic knowledge about how x86 architecture is like, basic knowledge about assembly language, and basic knowledge about how a Linux system is layered. Apparently you don't have any of them, so it's impossible for you to get an answer. I'll Flag for the reason you already know.
– 炸鱼薯条德里克
2 hours ago