![]() ![]() In case that you add a PPA to the software repositories, updating them is mandantory. It is recommended to update them every time before installing new packages. Generally it is enough to update the repository once a day.īut as the updates are pushed irregularly to the Ubuntu repositories, It is impossible to predict how often it changes, in general, without reference to a specific issue or bug report, or without following the development of that Ubuntu release. Users who need to update one of these R packages (say r-cran-foo) should first make sure to obtain all. The package list changes whenever a package is upgraded on the mirror. sudo apt-get update sudo apt-get install r-base. So I tried updating npm to the latest several ways. Prior to failing it notes that it 'wants' npm version 1.4.x, whereas I have 1.2.18 installed. It fails when running sudo npm install -g meaniolatest. Or, run the docker image, and then connect to that image and run. How to update npm Ask Question Asked 9 years, 2 months ago Modified 27 days ago Viewed 318k times 155 I'm trying to install mean.io boilerplate. FROM ubuntu RUN apt update RUN apt install vim or any package you want. First using Dockerfile and then docker build. A special case of this is when the package lists are up to date, which is after a reasonably short time since the last apt-get update this means that all packages on the mirror are the same version as they were. If its not working, check firewall of you laptop. However, it is not necessary, if you know that no new version of that package and of its dependencies have been made available on the mirrors since the last apt-get update. ![]() There is no reason not to run apt-get update before installing a package. It is essential before upgrading the installed packages, because the system cannot know whether the repo has a new version of a package, unless it has an up-to-date copy of the package list. Of course, apt-get update is necessary after you have changed the repositories, because the system needs to download the list for the new repositories. If you don't do it before an installation, apt-getmight complain that it cannot find the package in the repository, because it computed the URL based on an old version of the list (which listed an older version of the package). When you install a package, apt-get reads the list and determines the URL of the package to download (which typically contains package version information).Īpt-get update updates the package lists. Your copy of Ubuntu has a private copy of the list of packages that are in Ubuntu's repositories. ![]()
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