Example error: Solution: Step 1: restore the default repositories: Step 2: Move all the PPAs in your system to backup folder: sudo mv /etc/apt/sources.list.d/* ~/backup…
Install composer on Linux When using composer command, if you get error: E230001: Server SSL certificate verification failed: issuer is not trusted Fix: run this…
How to search files through all the packages available on Ubuntu Step 1: install apt-file sudo apt-get install apt-file Step 2: update apt-file sudo apt-file…
Step 1: Install Exim Install Exim from the CentOS repository using the following command line: sudo yum install exim After the installation is complete, you…