System Integrity Protection is a security technology introduced in OS X El Capitan that's designed to help prevent potentially malicious software from modifying protected files and folders on your Mac.
Detailed information can be found online, but for a light intro see Apple's page
Here we use Piker-Alpha's csrstat utility for reading the current state of SIP as used internally by the kernel
Source | https://github.com/Piker-Alpha/csrstat |
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The dump is saved to a file named SIP_status.txt in the latest dump/SIP folder.