apt-get  is the command–line tool for working with APT (Advanced Package Tool) software packages. It is the preferred way of installing packages on Linux distributions. Code Ocean mostly uses Ubuntu and Debian. 

Apt-get  is accessible in all base environments as part of the package management system.
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Typically, you will know the name of the package you need from the homepage or documentation of the code, or from higher–level library you're using. You may need to search to find the exact name. Feel free to reach out via live chat or an email to support@codeocean.com if you would like assistance..