How does debian/ubuntu knows a package has a updated version Announcing the arrival of Valued...
51k Euros annually for a family of 4 in Berlin: Is it enough?
Can an alien society believe that their star system is the universe?
How widely used is the term Treppenwitz? Is it something that most Germans know?
Identify plant with long narrow paired leaves and reddish stems
How to deal with a team lead who never gives me credit?
What's the purpose of writing one's academic biography in the third person?
At the end of Thor: Ragnarok why don't the Asgardians turn and head for the Bifrost as per their original plan?
Why am I getting the error "non-boolean type specified in a context where a condition is expected" for this request?
How to bypass password on Windows XP account?
The logistics of corpse disposal
How to align text above triangle figure
What does this icon in iOS Stardew Valley mean?
What does an IRS interview request entail when called in to verify expenses for a sole proprietor small business?
Are two submodules (where one is contained in the other) isomorphic if their quotientmodules are isomorphic?
Is there a (better) way to access $wpdb results?
How can I make names more distinctive without making them longer?
Coloring maths inside a tcolorbox
Should I discuss the type of campaign with my players?
Why did the Falcon Heavy center core fall off the ASDS OCISLY barge?
How to find out what spells would be useless to a blind NPC spellcaster?
String `!23` is replaced with `docker` in command line
Why did the rest of the Eastern Bloc not invade Yugoslavia?
How to react to hostile behavior from a senior developer?
How come Sam didn't become Lord of Horn Hill?
How does debian/ubuntu knows a package has a updated version
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
Come Celebrate our 10 Year Anniversary!using debian instead of ubuntuGiven a debian source package - How do I install the build-deps?How to find service dependencies for package updates on Ubuntu?Scripting installation of a virtual package provider on Debian/Ubuntudev/test/prod package update workflow for debian/ubuntuupdating, upgrading debian linux server except a packagePuppet: How to skip restart during package upgrade until config is replaced?How to tell apt-get that a package is OK and does not need any more attentionUsing Debian's unattended-upgrades packageHow to migrate from Jenkins week Ubuntu package to LTS?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
If my understanding is good, with apt update, Debian download a release file and with this file, it can tell if a package needs to be upgraded and with which dependencies. How does it do this? Th release file seems to be just a list of hashes so I don't quite understand.
Sorry, I don't have a very good English.
ubuntu debian apt
asked 2 hours ago
thomasthomas
82
New contributor
thomas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
If my understanding is good, with apt update, Debian download a release file and with this file, it can tell if a package needs to be upgraded and with which dependencies. How does it do this? Th release file seems to be just a list of hashes so I don't quite understand.
Sorry, I don't have a very good English.
ubuntu debian apt
asked 2 hours ago
thomasthomas
82
New contributor
thomas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
If my understanding is good, with apt update, Debian download a release file and with this file, it can tell if a package needs to be upgraded and with which dependencies. How does it do this? Th release file seems to be just a list of hashes so I don't quite understand.
Sorry, I don't have a very good English.
ubuntu debian apt
asked 2 hours ago
thomasthomas
82
New contributor
thomas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
If my understanding is good, with apt update, Debian download a release file and with this file, it can tell if a package needs to be upgraded and with which dependencies. How does it do this? Th release file seems to be just a list of hashes so I don't quite understand.
Sorry, I don't have a very good English.
ubuntu debian apt
ubuntu debian apt
asked 2 hours ago
thomasthomas
82
New contributor
thomas 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
thomasthomas
82
New contributor
thomas 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
thomasthomas
82
New contributor
thomas 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
thomasthomas
82
asked 2 hours ago
thomasthomas
82
82
New contributor
thomas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
thomas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
thomas is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Whilst apt update can download one or more Release files, the primary files it is downloading are Packages file(s). Those files contain the full list of available packages, their versions, and other metadata (like dependencies). Once apt has a list of available packages and their versions, it is a straightforward matter of comparison to determine which packages have versions newer than those currently installed.
answered 1 hour ago
womble♦womble
85.8k18145204
Thanks a lot for this.
– thomas
1 hour ago
add a comment |
Package lists are the Packages and Sources files. These contain the debian/control file content for every package in the repository. From these metadata APT can determine a dependency solution.
Releases is a description of the entire archive and signature data.
Debian reference manual, Chapter 2. Debian package management
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "2"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
thomas is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fserverfault.com%2fquestions%2f963386%2fhow-does-debian-ubuntu-knows-a-package-has-a-updated-version%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Whilst apt update can download one or more Release files, the primary files it is downloading are Packages file(s). Those files contain the full list of available packages, their versions, and other metadata (like dependencies). Once apt has a list of available packages and their versions, it is a straightforward matter of comparison to determine which packages have versions newer than those currently installed.
answered 1 hour ago
womble♦womble
85.8k18145204
Thanks a lot for this.
– thomas
1 hour ago
add a comment |
Whilst apt update can download one or more Release files, the primary files it is downloading are Packages file(s). Those files contain the full list of available packages, their versions, and other metadata (like dependencies). Once apt has a list of available packages and their versions, it is a straightforward matter of comparison to determine which packages have versions newer than those currently installed.
answered 1 hour ago
womble♦womble
85.8k18145204
Thanks a lot for this.
– thomas
1 hour ago
add a comment |
Whilst apt update can download one or more Release files, the primary files it is downloading are Packages file(s). Those files contain the full list of available packages, their versions, and other metadata (like dependencies). Once apt has a list of available packages and their versions, it is a straightforward matter of comparison to determine which packages have versions newer than those currently installed.
answered 1 hour ago
womble♦womble
85.8k18145204
Whilst apt update can download one or more Release files, the primary files it is downloading are Packages file(s). Those files contain the full list of available packages, their versions, and other metadata (like dependencies). Once apt has a list of available packages and their versions, it is a straightforward matter of comparison to determine which packages have versions newer than those currently installed.
answered 1 hour ago
womble♦womble
85.8k18145204
answered 1 hour ago
womble♦womble
85.8k18145204
answered 1 hour ago
womble♦womble
85.8k18145204
answered 1 hour ago
womble♦womble
85.8k18145204
85.8k18145204
Thanks a lot for this.
– thomas
1 hour ago
add a comment |
Thanks a lot for this.
– thomas
1 hour ago
Thanks a lot for this.
– thomas
1 hour ago
Thanks a lot for this.
– thomas
1 hour ago
add a comment |
Package lists are the Packages and Sources files. These contain the debian/control file content for every package in the repository. From these metadata APT can determine a dependency solution.
Releases is a description of the entire archive and signature data.
Debian reference manual, Chapter 2. Debian package management
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
add a comment |
Package lists are the Packages and Sources files. These contain the debian/control file content for every package in the repository. From these metadata APT can determine a dependency solution.
Releases is a description of the entire archive and signature data.
Debian reference manual, Chapter 2. Debian package management
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
add a comment |
Package lists are the Packages and Sources files. These contain the debian/control file content for every package in the repository. From these metadata APT can determine a dependency solution.
Releases is a description of the entire archive and signature data.
Debian reference manual, Chapter 2. Debian package management
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
Package lists are the Packages and Sources files. These contain the debian/control file content for every package in the repository. From these metadata APT can determine a dependency solution.
Releases is a description of the entire archive and signature data.
Debian reference manual, Chapter 2. Debian package management
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
answered 1 hour ago
John MahowaldJohn Mahowald
8,9111713
8,9111713
add a comment |
add a comment |
thomas is a new contributor. Be nice, and check out our Code of Conduct.
thomas is a new contributor. Be nice, and check out our Code of Conduct.
thomas is a new contributor. Be nice, and check out our Code of Conduct.
thomas is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Server Fault!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fserverfault.com%2fquestions%2f963386%2fhow-does-debian-ubuntu-knows-a-package-has-a-updated-version%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
