Official Doc: https://docs.docker.com/engine/install/ubuntu/ Run the following command to uninstall all conflicting packages: for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done Set up Docker’s apt repository. # Add Docker's official GPG key: sudo apt-get update sudo apt-get install ca-certificates curl sudo install -m Read more…
Recently, my wibesite often meet Out of Memory Problem. And apache will be automatically killed the memory is full. So I decided to add a cron service to moniter the memory usage and restart the apache service. #!/bin/sh TOTAL=`cat /proc/meminfo | grep MemTotal: | awk '{print $2}'` USEDMEM=`cat /proc/meminfo | Read more…
Method 1: Using the default Software Centre In Ubuntu, the easiest way is to use the default Software Centre. Here you don’t have to do anything special. Just go to the folder where you downloaded the .deb file (it should be the Downloads folder) and double click on this file. Read more…
dpkg is short for Debian package, a package management system developed specifically for the Debian operating system to install, update and remove software. All Linux systems derived from “Debian” use dpkg, for example “Ubuntu”. dpkg [option] <action> Options:-i: Install package-r: Remove package-P: Delete a package with its configuration file-L: Show Read more…
dpkg -l will list information about all installed packages on your system. In combination with grep, you can filter out what you want. e.g. dpkg -l | grep ftp The first column of the output is usually two letters, representing the desired state and the current state respectively. Desired state Read more…