I recently needed to establish an ad-hoc ssh connection to a server behind a firewall. I didn't control the firewall and couldn't get a port mapped through it for incoming ssh access, so I had to use a reverse ssh...
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Our thinking
Fix SMB Permissions on OS X Server for Newly Created Files and Folders
I don't know why it is, but SMB on OS X Server is slower and less reliable than the AFP that it replaces. Despite Apple making it the default for OS X to OS X Server file sharing connections, AFP...
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Set OS X Server to Deny SMB 3 Connections
Sometimes an OS X Server will have very poor SMB file sharing performance - whilst I haven't been able to ascertain with 100% certainty what causes it, something that may be a factor is the use of SMB 3 connections...
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Mount a Windows partition of an optical disc on OS X
Today I needed to install some software on a Windows server - the software only came on an optical disc and the Windows server didn't have an optical drive. "No problem" I thought to myself, I'll just put the DVD...
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Change a Open Directory Group’s GeneratedUID or UUID
I occasionally see OS X Server's Open Directory flip out, sometimes a simple repair of the LDAP databases seems to fix it, sometimes you need to go deeper. If repairing the databases doesn't work, then I try to recover the...
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Android adb on Mac OS X recognising Google Pixel C
I've had a bit of trouble getting a Google Pixel C to be recognised on my Mac - wasn't able to get it showing up in System Profiler and wasn't able to see it with adb. I was initially trying...
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Set Microsoft Outlook 2016 as default mail client on OS X 10.11 El Capitan
I've had a few issues trying to change the default mail client on El Cap. In nearly every case, after changing it in Mail (seemingly the only place you can actually change it), the change doesn't stick. After quitting and...
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Fix a broken Open Directory
Edit: November 2021 People seem to still be hitting this story, and by and large these steps usually work. If you are still relying on macOS Server however, you need to migrate to another platform with some degree of urgency....
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Re-running a Unix command, until it completes successfully – e.g.: imapsync
I'm doing an email migration for a client from an old 2008 SBS Server into Office 365. For some reason, there were two mailboxes that just wouldn't migrate using the migration wizard in Office 365. I switched to the ever-trusty...
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OS X 10.11 El Capitan and System Integrity Protection (SIP)
This is shamelessly cut and pasted from TwoCanoes: System Integrity Protection (SIP) Apple has implemented a new security feature in OS X 10.11, System Integrity Protection, which prevents even super users from altering the contents of files in key System...
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