Clean System Data storage using macOS Terminal

The other day a client contacted me panicking about one his new macOS running out of disk space. He told me his System Data storage shows over 300GB of space. I quickly remembered a related issue on older macs on how to clean system data storage using the terminal. I quickly put my moka pot …

Update macOS from Terminal

After another snow day in NYC a customer contacted me about not being able to push macOS updates using his MDM provider. Why is the MDM provider not working? Their support was not that helpful and they blamed Apple for the updates not working. Then I said to myself “update macos from terminal?” Yes, I …

Find macOS version using the Terminal

I like to use the Terminal for most of my work and to find macOS version is quite simple. I help most of my clients remotely and using the Terminal is usually fast and simple in my opinion. As usual, I need to brew a great cup of coffee at home before taking on any …

Postman Cannot Reach localhost macOS Sonoma

This was very frustrating I have to say! After coming to Punta del Diablo in Uruguay to have some time away from big cities like NYC. At the same time I wanted to do some self skills improvement while away. I started learning more about APIs, but I kept getting issues with postman not seeing …

Python3.9: bad interpreter: No such file or directory macOS Sonoma

Last week I decided to finally upgrade my macOS BigSur to Sonoma. As usual I get issues after the upgrade. For example, security settings, apps permissions, custom backup script I put together to backup my files to a NAS drive stop working. This time I got error “Python3.9: bad interpreter: No such file or directory“. …

No Matching Key Exchange Method Found when SSH Older Linux Server from macOS Sonoma

The other day I decided to upgrade to macOS Sonoma. As usual, when you do an OS upgrade something breaks. I was not able to SSH to an old Linux server. Before, when on macOS BigSur I was able to SSH to any Linux box from my Terminal. My guess is OpenSSH improved security. Anyways, …

Microsoft Outlook is Trying to use the printer macOS

A macOS client texted me yesterday about Microsoft Outlook trying to use the printer error. The user was trying to print to a personal HP printer connected over the network. He was only getting the printing error for this specific printer, but did not get the error when trying to print to his office’s main …

Photoshop Could not open “.tif” because the TIFF file uses an unsupported color space

After I brewed my favorite coffee variety Caturra at home I got an email from a macOS client regarding issues with their Photoshop not opening .tif files. They just started scanning a butch of images in .tif format for later editing. Starting Photoshop version 22.5.2 stopped supporting .tif files. According to Adobe this is due …

Clean Install macOS Without a USB

Performing a clean install macOS without a USB is fairly easy compared to other operating systems. I know traditionally most IT admins (IT Handy men) think about using a USB to quickly wipe and re-install a OS. But, some times there is NO USB available or the laptop does NOT have a USB port anymore …