# # System Integrity Protection (SIP) in El Capitan
APLawrence.com -  Resources for Unix and Linux Systems, Bloggers and the self-employed

System Integrity Protection (SIP) in El Capitan

I've removed advertising from most of this site and will eventually clean up the few pages where it remains.

While not terribly expensive to maintain, this does cost me something. If I don't get enough donations to cover that expense, I will be shutting the site down in early 2020.

If you found something useful today, please consider a small donation.



Some material is very old and may be incorrect today

© May 2019 Anthony Lawrence

Here's a fun little exercise on El Capitan:


[email protected]:~$ su - apl
Password:

iMac:~ apl$ 
iMac:~ apl$ sudo su -
Password:
iMac:~ root# echo ls > /usr/bin/foobydoo
-sh: /usr/bin/foobydoo: Operation not permitted
iMac:~ root# 
 


What's going on? It's SIP (System Integrity Protection, also known as "Rootless") in the latest OS X. It protects /usr, /bin, /System, and /sbin from writing, even by root. It also won't allow you to debug certain protected system processes and you cannot use unsigned kernel extensions at all.

Of course this is good for system security, but it has also killed some apps outright and caused major changes in others.

System Integrity Protection (SIP) in El Capitan kills some apps

In some cases, you can still use the app by disabling SIP, installing the app and then renabling SIP. You do that by booting into the Recovery partition and using the csrutil tool.

$ csrutil
usage: csrutil 
Modify the System Integrity Protection configuration. All configuration changes apply to the entire machine.
Available commands:
    disable
        Disable the protection on the machine. Requires a reboot.
    enable
        Enable the protection on the machine. Requires a reboot.
    status
        Display the current configuration.



Most of us won't need to be concerned about any of this.

Use and Abuse of /usr/local/bin


If you found something useful today, please consider a small donation.



Got something to add? Send me email.





(OLDER)    <- More Stuff -> (NEWER)    (NEWEST)   

Printer Friendly Version

->
-> System Integrity Protection (SIP) in El Capitan


Inexpensive and informative Apple related e-books:

Photos: A Take Control Crash Course

Take Control of High Sierra

Take Control of Numbers

Take Control of Parallels Desktop 12

El Capitan: A Take Control Crash Course





More Articles by © Anthony Lawrence





Printer Friendly Version

Have you tried Searching this site?

This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more.

Contact us


Printer Friendly Version





Anyone even peripherally involved with computers agrees that object-oriented programming (OOP) is the wave of the future. Maybe one in 50 of them has actually tried to use OOP – which has a lot to do with its popularity (Steve Steinberg)




Linux posts

Troubleshooting posts


This post tagged:

Apple

Security

Troubleshooting



Unix/Linux Consultants

Skills Tests

Unix/Linux Book Reviews

My Unix/Linux Troubleshooting Book

This site runs on Linode