How disable spotlight in high sierra [10.3.2]

To disable Spotlight launch Terminal and copy & paste this command at the prompt:

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist

Press Return and enter your password (it will be invisible)

To reenable:

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist

% sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
/System/Library/LaunchDaemons/com.apple.metadata.mds.plist: Operation not permitted while System Integrity Protection is engaged