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?
What does an IRS interview request entail when called in to verify expenses for a sole proprietor small business?
How come Sam didn't become Lord of Horn Hill?
Why do we bend a book to keep it straight?
porting install scripts : can rpm replace apt?
Storing hydrofluoric acid before the invention of plastics
How widely used is the term Treppenwitz? Is it something that most Germans know?
2001: A Space Odyssey's use of the song "Daisy Bell" (Bicycle Built for Two); life imitates art or vice-versa?
How to run gsettings for another user Ubuntu 18.04.2 LTS
Do I really need recursive chmod to restrict access to a folder?
51k Euros annually for a family of 4 in Berlin: Is it enough?
Seeking colloquialism for “just because”
Book where humans were engineered with genes from animal species to survive hostile planets
Why do people hide their license plates in the EU?
How to deal with a team lead who never gives me credit?
What's the meaning of 間時肆拾貳 at a car parking sign
Is it true that "carbohydrates are of no use for the basal metabolic need"?
Dating a Former Employee
What causes the vertical darker bands in my photo?
Identify plant with long narrow paired leaves and reddish stems
Why did the Falcon Heavy center core fall off the ASDS OCISLY barge?
Bete Noir -- no dairy
Identifying polygons that intersect with another layer using QGIS?
Can an alien society believe that their star system is the universe?
A coin, having probability p of landing heads and probability of q=(1-p) of landing on heads.
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 2 hours 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 2 hours 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');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
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 2 hours 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 2 hours 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 2 hours 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 2 hours ago
womble♦womble
85.8k18145204
answered 2 hours ago
womble♦womble
85.8k18145204
answered 2 hours ago
womble♦womble
85.8k18145204
answered 2 hours 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 2 hours 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 2 hours 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 2 hours 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 2 hours ago
John MahowaldJohn Mahowald
8,9111713
answered 2 hours ago
John MahowaldJohn Mahowald
8,9111713
answered 2 hours ago
John MahowaldJohn Mahowald
8,9111713
answered 2 hours 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');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
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');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
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');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
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');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
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
