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- What is the difference between apt and apt-get? - Ask Ubuntu
The apt commands have been introduced to solve this problem apt consists some of the most widely used features from apt-get, apt-cache and apt-config leaving aside obscure and seldom used features
- apt - How do I search for available packages from the command-line . . .
I have successfully installed some packages using the command: sudo apt-get install packagename when I have known in advance that those packages are available But how can I search for or get a l
- apt - Package system is broken. How to fix it? - Ask Ubuntu
Otherwise it can be dealt via CLI: Open terminal and run this command: sudo apt-get clean Above command will clean out the local repository of retrieved package file sudo apt-get install -f Will correct broken dependencies i e -f here stands for “fix broken” sudo dpkg --configure -a will configure all (-a) the packages which haven't been configured yet In the end do run the update
- apt - How to download a software package with all dependencies and sub . . .
Open the terminal and type: apt download package-name apt install --simulate package-name deb # dry run doesn't install anything where package-name should be replaced by the name of the package that you are trying to download and package-name deb should be replaced by the name of the deb file that you are trying to install
- How to know whether a particular package is installed on ubuntu?
TL;DR: For a simple command (no | grep) with compact output, you can use apt list package, which is usually what you want (compare to apt-cache policy package), or dpkg-query -W package as a less cluttered version of dpkg -l package The apt command (for apt list package) is available in Ubuntu 14 04 and later apt list tells you if your package is installed apt list package shows the version
- What does sudo apt-get update do? - Ask Ubuntu
In a nutshell, apt-get update doesn't actually install new versions of software Instead, it updates the package lists for upgrades for packages that need upgrading, as well as new packages that have just come to the repositories apt-get update downloads the package lists from the repositories and "updates" them to get information on the newest versions of packages and their dependencies It
- How do I find the package that provides a file? - Ask Ubuntu
A couple of caveats: 1) you have to install apt-file which is really annoying; 2) it is much slower than dpkg -S, eg on my system the latter takes less than half a second, whereas apt-file find takes 20 seconds! 3) most often, if you have a path on your system, then the package is installed, so why pay for the overhead of apt-file?
- apt-get update failed because certificate verification failed because . . .
Running sudo apt-get update on my AWS EC2 Ubuntu 18 04 01 LTS instance fails: Certificate verification failed: The certificate is NOT trusted The certificate issuer is unknown when trying to acce
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