Archive for November, 2017

First Boot Package Install now adds product identifier tags to its packages

November 22, 2017 Leave a comment

As a follow-up to Greg Neagle’s discovery that product identifiers are now needed to ensure best results when adding additional packages to macOS High Sierra OS installers, I’ve updated First Boot Package Installer to add product identifiers by default to the firstboot packages created by this tool.

The product identifier values will be the user-selected Package Identifier followed by the Version Identifier.

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These values will appear in the firstboot package’s distribution file as shown below:

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For those who need this capability, an installer for First Boot Package Install 1.7 can be downloaded via the link below:

Enabling Touch ID authorization for sudo on macOS High Sierra

November 17, 2017 2 comments

My colleague @mikeymikey brought this tweet by Cabel Sasser to my attention yesterday:

I have a Touch ID-enabled MacBook Pro and use sudo frequently, so I’ve implemented this on my own laptop. For more details, see below the jump.

Read more…

Categories: Mac administration, macOS, Unix

APFS encryption status check script

November 13, 2017 1 comment

As part of working Apple File System, I’ve developed a script which is designed to check and report the status of encrypted Apple File System (APFS) drives. Currently, here’s what the script is detecting and reporting:

It first checks to see if a Mac is running 10.13.x or higher. If the Mac is question is running 10.13.x or higher, the script reports if it is using encryption on an APFS drive and gives the encryption or decryption status.

If encrypted, the following message is displayed:

FileVault is On.

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If not encrypted, the following message is displayed:

FileVault is Off.

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If encrypting, the following message is displayed:

Encryption in progress:

How much has been encrypted is also displayed.

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If decrypting, the following message is displayed without quotes:

Decryption in progress:

How much has been decrypted is also displayed.

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If run on a drive which is not using APFS, the following message is displayed:

Unable to display encryption status for filesystems other than APFS.

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The script is available below and here on my GitHub repository:

I’ve also built a Jamf Pro Extension Attribute:

Downloading macOS Sierra from the Mac App Store

November 10, 2017 2 comments

Now that macOS High Sierra has been released, it’s become more difficult to access the macOS Sierra installer in the Mac App Store (MAS) for those who still need it.

Previous versions of OS X and Mac OS X which were purchased by an Apple ID will appear in the MAS’s Purchased list for that Apple ID, but macOS Sierra is an exception because it did not need to be purchased using an Apple ID.

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Fortunately, Sierra has not been removed from the MAS and it is still available for download. Apple has a KBase article, available via the link below, which shows how to access the macOS Sierra page in the Mac App Store:

To access the macOS Sierra page directly, please click on the link below:

That link should open the MAS and take you to the macOS Sierra download page.

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In the event that you’re blocked from downloading macOS Sierra, you should be able to download it in a virtual machine. I have a post on how to do this, available via the link below:

Categories: Mac administration, macOS

Session videos from Jamf Nation User Conference 2017 now available

November 10, 2017 1 comment

Jamf has posted the session videos for from JAMF Nation User Conference 2017, including the video for my Apple File System session.

For those interested, all of the JNUC 2017 session videos are available on YouTube. For convenience, I’ve linked my session here.

Adding installer package code-signing to AutoPkg workflows

November 10, 2017 1 comment

As part of building an AutoPkg workflow to create installer packages, one of the requirements I was given was that any packages that weren’t already signed by the vendor needed to be signed using a Developer ID Installer signing certificate.

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Signing installer package is not usually an outcome of most AutoPkg workflows, since code signature verification can be used at the download end to make sure that the application is what it is supposed to be. However, there were several good reasons for adding a package signing step to the workflow, including:

  1. It is now necessary to sign packages before you’ll be able to use them as part of NetInstall sets
  2. The InstallApplication MDM command requires that macOS installer packages be signed with an appropriate certificate

After some research and testing, I was able to incorporate installer package signing into my AutoPkg workflow and am now able to automatically sign installer package as they’re generated by my package creation workflows. For more details, see below the jump.

Read more…

Implementing log rotation for the Jamf Infrastructure Manager logs on Red Hat Enterprise Linux

November 4, 2017 Leave a comment

A while back, I had set up the Jamf Infrastructure Manager (JIM) in a VM running Red Hat Enterprise Linux (RHEL) to provide a way for a Jamf Pro server hosted outside a company’s network to be able to talk to an otherwise inaccessible Active Directory domain. The JIM software has been running fine since I configured it, but I recently needed to take a look at the JIM logs as part of diagnosing another issue.

For those not familiar with the JIM software, it has several log files and those logs are available in the following location on RHEL:


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When I checked the logs, I noticed that /var/log/jamf-im.log had grown to almost 500 MBs in size.

Considering this log is a plaintext file, that’s a big log file and it seemingly had been not been rotated or otherwise changed since I first installed the JIM software. To help make sure that the host VM would not eventually run out of space because of this growing log file, I needed to implement log rotation for the JIM logs. For more details, see below the jump.

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