Add count-apple-applications to query handbook (#653)

- Add "Count apple applications" to query handbook
- Add supported platforms to query index in `/handbook/queries` README

handbook/queries/README.md

@@ -4,23 +4,24 @@ Fleet's standard query library includes a growing collection of useful queries f
 
 ### Queries
 
-- [Detect machines with gatekeeper disabled](./detect-machines-with-gatekeeper-disabled.md)
-- [Detect presence of authorized SSH keys](./detect-presence-of-authorized-ssh-keys.md)
-- [Detect hosts with the firewall disabled](./detect-hosts-with-the-firewall-disabled.md)
-- [Get installed Chrome extensions](./get-installed-chrome-extensions.md)
-- [Get installed FreeBSD software](./get-installed-freebsd-software.md)
-- [Get installed Homebrew packages](./get-installed-homebrew-packages.md)
-- [Get installed Linux software](./get-installed-linux-software.md)
-- [Get installed macOS software](./get-installed-macos-software.md)
-- [Get installed Safari extensions](./get-installed-safari-extensions.md)
-- [Get installed Windows software](./get-installed-windows-software.md)
-- [Get laptops with failing batteries](./get-laptops-with-failing-batteries.md)
-- [Get macOS disk free space percentage](./get-macos-disk-free-space-percentage.md)
-- [Get System Logins and Logouts](./get-system-logins-and-logouts.md)
-- [Get wifi status](./get-wifi-status.md)
-- [Get Windows machines with unencrypted hard disks](./get-windows-machines-with-unencrypted-hard-disks.md)
-- [Get platform info](./get-platform-info.md)
-- [Get USB devices](./get-usb-devices.md)
+- [Detect machines with gatekeeper disabled](./detect-machines-with-gatekeeper-disabled.md)(macOS)
+- [Detect presence of authorized SSH keys](./detect-presence-of-authorized-ssh-keys.md)(macOS, Linux)
+- [Detect hosts with the firewall disabled](./detect-hosts-with-the-firewall-disabled.md)(macOS)
+- [Get installed Chrome extensions](./get-installed-chrome-extensions.md)(macOS, Linux, Windows, FreeBSD)
+- [Get installed FreeBSD software](./get-installed-freebsd-software.md)(FreeBSD)
+- [Get installed Homebrew packages](./get-installed-homebrew-packages.md)(macOS)
+- [Get installed Linux software](./get-installed-linux-software.md)(Linux)
+- [Get installed macOS software](./get-installed-macos-software.md)(macOS)
+- [Get installed Safari extensions](./get-installed-safari-extensions.md)(macOS)
+- [Get installed Windows software](./get-installed-windows-software.md)(Windows)
+- [Get laptops with failing batteries](./get-laptops-with-failing-batteries.md)(macOS)
+- [Get macOS disk free space percentage](./get-macos-disk-free-space-percentage.md)(macOS)
+- [Get System Logins and Logouts](./get-system-logins-and-logouts.md)(macOS)
+- [Get wifi status](./get-wifi-status.md)(macOS)
+- [Get Windows machines with unencrypted hard disks](./get-windows-machines-with-unencrypted-hard-disks.md)(Windows)
+- [Get platform info](./get-platform-info.md)(macOS)
+- [Get USB devices](./get-usb-devices.md)(macOS, Linux)
+- [Count Apple applications installed](./get-usb-devices.md)(macOS)
 
 ### Contributors
 

handbook/queries/count-apple-applications-installed.md

@@ -0,0 +1,21 @@
+# Count Apple applications installed
+
+Count the number of Apple applications installed on the machine.
+
+### Support
+macOS
+
+### Query
+```sql
+SELECT
+  COUNT(*)
+FROM
+  apps
+WHERE
+  bundle_identifier LIKE 'com.apple.%';
+```
+### Purpose
+Informational
+
+### Remediation
+N/A

handbook/queries/get-installed-chrome-extensions.md

@@ -3,7 +3,7 @@
 List installed Chrome Extensions for all users.
 
 ### Support
-macOS
+macOS, Linux, Windows, FreeBSD
 
 ### Query
 ```sql

handbook/queries/get-usb-devices.md

@@ -3,7 +3,7 @@
 Shows all USB devices that are actively plugged into the host system.
 
 ### Support
-macOS
+macOS, Linux
 
 ### Query
 ```sql