csrutil: add page (#6615)

pages/osx/csrutil.md

@@ -0,0 +1,28 @@
+# csrutil
+
+> Manage the System Integrity Protection configuration.
+> More information: <https://ss64.com/osx/csrutil.html>.
+
+- Display the System Integrity Protection status:
+
+`csrutil status`
+
+- Disable the System Integrity Protection:
+
+`csrutil disable`
+
+- Enable the System Integrity Protection:
+
+`csrutil enable`
+
+- Display the list of allowed NetBoot sources:
+
+`csrutil netboot list`
+
+- Add an IPv4 address to the list of allowed NetBoot sources:
+
+`csrutil netboot add {{ip_address}}`
+
+- Reset the System Integrity Protection status and clear the NetBoot list:
+
+`csrutil clear`