How To Remove the MacOS Quarantine Extended File Attribute for an Entire Directory Tree

Author: , November 24th, 2019

xattr -r -d com.apple.quarantine {dirname} ~or~ xattr -r -d com.apple.quarantine *

How To Read Multiple Lines of User Input from the Command Line in Perl

Author: , October 9th, 2019

Use Case: Export Apple Reminders from MacOS application to cleaned plain text, i.e. remove unwanted spaces, blank lines and square brackets PROCEDURE Click on a single item in the MacOS Reminders app list Select All (either Command-a or use Edit->Select All) Copy (either Command-c or use Edit->Copy) Open Terminal Run cleanme Paste the copied reminders […]

How To Fix File Sharing Problems in MacOS 10.14 Mojave

Author: , July 28th, 2019

When I upgraded to Mojave, my laptops were no longer able to connect to my desktop. Deeply frustrating. Long story short, combo of factors: – Mojave filesystems on disk now default to APFS containers – APFS filesystems can ONLY be shared out via SMB! – Hostname resolution in Mojave also seems broken So, the fix […]

How To Install/Update CPAN on MacOS Mojave with fatal error: ‘EXTERN.h’ file not found

Author: , June 12th, 2019

The Problem Tried to install the latest version of cpan and got stuck. Tracked it down to the dependency module Mac::SystemDirectory which was failing to build:

The Solution Use the MacOS installer command to deploy the needed files:

The, rerunning the cpan install works:

How To Get Sonos Working on MacOS Mojave

Author: , June 6th, 2019

Sonos was running just fine oon my MacOS Mojave iMac, then I had to force-quit it due to a system freeze. The Sonos app REFUSED to start, no matter what I tried, including uninstall/reinstall, full scrub of all files located, uninstaller software, reboots, cache cleaning and reboot with Onyx – NOTHING worked, and i was […]

How To Force csshX To Tile In Columns

Author: , May 28th, 2019

I use csshX on a daily basis. The default layout on my screen for three nodes is one column with three rows, one per node. This layout is excellent for visual positioning, but does make it harder to read long output. For this purpose, I start csshX using the column quantity specifier -x and I […]

How To Fix rsync Packet Corrupt Errors

Author: , May 10th, 2019

I was getting rsync errors from one source host:

Finally tracked it down to the application “Little Snitch”. Needed to fully uninstall it and reboot to get the problem solved.

How To Enable Opening a Terminal Window from the Current Finder Location in MacOS

Author: , February 16th, 2019

As of Mac OS X Lion 10.7, Terminal provides Services for opening a new terminal window or tab at the selected folder in Finder. They also work with absolute pathnames selected in text (in any application). You can enable these services with System Preferences > Keyboard > Keyboard Shortcuts > Services. Look for “New Terminal […]

How To Obtain a Public Key from an AWS .pem Private Key on Linux and Mac

Author: , February 4th, 2019

Use the ssh-keygen command on a computer to which you’ve downloaded your private key .pem file; for example: First, ensure permissions will allow ssh-keygen to work: chmod 600 /path/to/the/file/your-key-pair.pem Then generate an RSA public key: ssh-keygen -y -f /path/to/the/file/your-key-pair.pem > your-key-pair.pub

How To Disable Adobe Daemons Using launchctl on MacOS

Author: , November 18th, 2018

I installed an old version of Adobe software on my new Mac and as usual, it installed some daemons that are undesirable. Here is how I got rid of them via the Terminal. Note: Adobe installs daemons in the user context, so do this as your regular user login, not as root. shell> launchctl list […]