bashgnupgkeys

So basically, I want to run these 2 commands but I want to check if the keys already existed. I know how to do the ifthenelse in bash but I'm not sure how to get the result and store in variable for me to check so that i can put it in the conditional operator. For example, if it already existed then I can skip downloading and adding it again.

Example 1 (–fetch-keys):

sudo tee /etc/apt/sources.list.d/vscode.list > /dev/null <<- END
deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main
END

Example 2 (–recv-keys):

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B9A06DE3
sudo tee /etc/apt/sources.list.d/inkscape.list > /dev/null <<- END
END

TEST=$(apt-key list 2> /dev/null | grep my_app_name) if [[ !$TEST ]]; then