description I have seen some users use git fetch, and some use git pull. But I did not understand the difference between both. Please explain when to use git fetch and git pull? (...)

In my shell script, I need to check if a directory exists or not. So, here what command I should use to verify a directory exist or not in a given path?

I am trying to install mysql-server in Ubuntu server using a shell script, when I run this command apt install -y mysql-server and during the installation I need to enter the password (...)