About silent installations (Linux)
After you update the customized personalization file, launch the assisted installation from the Linux CLI.
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Create the Assisted Install.txt file with your preferences. See Customize the personalization file.
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To begin the assisted installation, enter:
Ubuntu:
$ sudo FM_ASSISTED_INSTALL=path apt install package_path/filemaker-server_version.build_amd64.debCentOS:
$ sudo FM_ASSISTED_INSTALL=path yum install filemaker_server-version-build.x86_64.rpmwhere:
pathis the location of the customized personalization filepackage_pathis the location of the Linux installerversionis the version number the FileMaker Server for Linux installerbuildis the build number of the FileMaker Server for Linux installer 
Note You must specify the package path for Ubuntu, but it is optional for CentOS.
Important FileMaker Server requires that ports 80 and 443 be available on the user’s machine. If they are not available, the software will not install.