I am making an application that needs to know if the user has Spaces activated, and if so how many Spaces they have. I have spent hours trying to figure this out, first from other websites, then on my own, and nothing works. Please help!!! 
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macOS Need Help with System preferences & Applescript
- Thread starter lynkynpark86
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Exactly how did you go about looking for information?
I entered what seemed like an obvious set of keywords to google: mac os spaces terminal command
In the search results, this was the 4th hit:
To discover the values associated with Spaces row and column count, change the default using System Preferences, then re-read the plist file. Same procedure for discovering which space is occupied by which apps.
I chose the search keywords to include spaces for the obvious reason, and terminal command because I thought it's more likely an answer is going to involve a Terminal command, rather than an actual AppleScript scripting element or a GUI app. Why? Because who but a programmer would even want this capability, and the first tool most programmers think of making is a command-line tool.
I entered what seemed like an obvious set of keywords to google: mac os spaces terminal command
In the search results, this was the 4th hit:
Terminal Commands for Hidden Settings in Leopard
http://www.macosxtips.co.uk/index_files/terminal-commands-for-hidden-settings-in-leopard.html
I confirmed the information by enabling & disabling Spaces, and reading the plist file with Property List Editor.http://www.macosxtips.co.uk/index_files/terminal-commands-for-hidden-settings-in-leopard.html
To discover the values associated with Spaces row and column count, change the default using System Preferences, then re-read the plist file. Same procedure for discovering which space is occupied by which apps.
I chose the search keywords to include spaces for the obvious reason, and terminal command because I thought it's more likely an answer is going to involve a Terminal command, rather than an actual AppleScript scripting element or a GUI app. Why? Because who but a programmer would even want this capability, and the first tool most programmers think of making is a command-line tool.