Yes, macOS does keep a history of everything users download, although users can prevent items from being recorded in that history if they're using their browser's private browsing function or other software designed to ensure your privacy (e.g. the Tor browser, etc).
So, downloading anything in a typical browser (even right-clicking on an image and saving it)...
Here, I assume your iMac has a 21.5" screen and was original configured with a internal 1 TB HDD. In this case, your model does not have the PCIe connector for an internal blade SSD. Therefore, you could only replace the internal SATA HDD with an internal SATA SSD. Note, this SATA connector operates at a maximum of 6 Gb/s. So, instead of replacing the ...
No. It just runs find command in the background to collect all file names and then it creates file name database from it. In any case you can simply rebuild the database by running
sudo rm -r /var/db/locate.database
in order to use locate command.
This feature is marketed under the name "Instant Hotspot" as part of the Continuity framework and is implemented very using Bluetooth Low Energy (BLE).
The implementation differ slightly depending on whether or not the user is part of "Family Sharing", but the end result is the same. Various forms of encryption are used to ensure ...
Apple devices talk to each other and listen without needing the internet or a server or a network.
Look up Rendezvous and Bonjour and mDNS as they are the marketing and technical terms of the first iteration of this capability. More recent devices have enhanced capabilities including NFC and Bluetooth range estimation - look up Bluetooth Beacons for that ...
The problem is that the pList is corrupted or there's something wrong with it.
We have to access the Library directory to fix it.
hit Command + shift + g to pull up the directory search, and enter ~/Library
1a. If you still cannot get to the ~/Library directory, we need to show hidden files.
open your Terminal, Enter: ⌘ + ⇧ + . (Command + Shift + .)