After setting up clean install of macOS Sierra in a multi-user environment (computer lab) it is useful to disable iCloud and siri prompt at the first login.
Here is the original link with instructions and a script to disable iCloud promt:
https://derflounder.wordpress.com/2013/10/27/disabling-the-icloud-sign-in-pop-up-message-on-lion-and-later/
the script is:
#!/bin/sh
# Determine OS version
osvers=$(sw_vers -productVersion | awk -F. '{print $2}')
sw_vers=$(sw_vers -productVersion)
# Checks first to see if the Mac is running 10.7.0 or higher.
# If so, the script checks the system default user template
# for the presence of the Library/Preferences directory.
#
# If the directory is not found, it is created and then the
# iCloud pop-up settings are set to be disabled.
if [[ ${osvers} -ge 7 ]]; then
for USER_TEMPLATE in "/System/Library/User Template"/*
do
defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant DidSeeCloudSetup -bool TRUE
defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant GestureMovieSeen none
defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant LastSeenCloudProductVersion "${sw_vers}"
done
# Checks first to see if the Mac is running 10.7.0 or higher.
# If so, the script checks the existing user folders in /Users
# for the presence of the Library/Preferences directory.
#
# If the directory is not found, it is created and then the
# iCloud pop-up settings are set to be disabled.
for USER_HOME in /Users/*
do
USER_UID=`basename "${USER_HOME}"`
if [ ! "${USER_UID}" = "Shared" ]
then
if [ ! -d "${USER_HOME}"/Library/Preferences ]
then
mkdir -p "${USER_HOME}"/Library/Preferences
chown "${USER_UID}" "${USER_HOME}"/Library
chown "${USER_UID}" "${USER_HOME}"/Library/Preferences
fi
if [ -d "${USER_HOME}"/Library/Preferences ]
then
defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant DidSeeCloudSetup -bool TRUE
defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant GestureMovieSeen none
defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant LastSeenCloudProductVersion "${sw_vers}"
chown "${USER_UID}" "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant.plist
fi
fi
done
fi
And here is the original link with information on how to disable siri:
https://derflounder.wordpress.com/2016/09/20/supressing-siri-pop-up-windows-on-macos-sierra/
and here is the script
#!/bin/bash
# Determine OS version
osvers=$(sw_vers -productVersion | awk -F. '{print $2}')
sw_vers=$(sw_vers -productVersion)
# Determine OS build number
sw_build=$(sw_vers -buildVersion)
# Checks first to see if the Mac is running 10.7.0 or higher.
# If so, the script checks the system default user template
# for the presence of the Library/Preferences directory. Once
# found, the iCloud, Diagnostic and Siri pop-up settings are set
# to be disabled.
if [[ ${osvers} -ge 7 ]]; then
for USER_TEMPLATE in "/System/Library/User Template"/*
do
/usr/bin/defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant DidSeeCloudSetup -bool TRUE
/usr/bin/defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant GestureMovieSeen none
/usr/bin/defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant LastSeenCloudProductVersion "${sw_vers}"
/usr/bin/defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant LastSeenBuddyBuildVersion "${sw_build}"
/usr/bin/defaults write "${USER_TEMPLATE}"/Library/Preferences/com.apple.SetupAssistant DidSeeSiriSetup -bool TRUE
done
# Checks first to see if the Mac is running 10.7.0 or higher.
# If so, the script checks the existing user folders in /Users
# for the presence of the Library/Preferences directory.
#
# If the directory is not found, it is created and then the
# iCloud, Diagnostic and Siri pop-up settings are set to be disabled.
for USER_HOME in /Users/*
do
USER_UID=`basename "${USER_HOME}"`
if [ ! "${USER_UID}" = "Shared" ]; then
if [ ! -d "${USER_HOME}"/Library/Preferences ]; then
/bin/mkdir -p "${USER_HOME}"/Library/Preferences
/usr/sbin/chown "${USER_UID}" "${USER_HOME}"/Library
/usr/sbin/chown "${USER_UID}" "${USER_HOME}"/Library/Preferences
fi
if [ -d "${USER_HOME}"/Library/Preferences ]; then
/usr/bin/defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant DidSeeCloudSetup -bool TRUE
/usr/bin/defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant GestureMovieSeen none
/usr/bin/defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant LastSeenCloudProductVersion "${sw_vers}"
/usr/bin/defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant LastSeenBuddyBuildVersion "${sw_build}"
/usr/bin/defaults write "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant DidSeeSiriSetup -bool TRUE
/usr/sbin/chown "${USER_UID}" "${USER_HOME}"/Library/Preferences/com.apple.SetupAssistant.plist
fi
fi
done
fi
exit 0