Bypassing Wi-Fi login screen

Submitted by Darren Oh on Mon, 06/24/2019 - 23:53

If you are trying to connect a device that cannot display a Wi-Fi login screen to a Wi-Fi network that requires a login screen, you will need to spoof the MAC address of the device you are trying to connect on a device that can display a login screen.

A MAC address is a hardware ID that identifies a device on a network. Here’s how to spoof the MAC address on a Mac computer.


What’s the value of working for an agency?

Submitted by Darren Oh on Wed, 05/15/2019 - 10:57

I work for Cognizant, a technology consulting company. My division, Cognizant Softvision, provides digital engineering services to clients. What this means in practice is that I am embedded in a client’s engineering team. This works fine for me, but I have wondered how the business model works for Cognizant and for clients and whether it limits my earnings.


Too many open files on MacOS

Submitted by Darren Oh on Thu, 04/25/2019 - 11:58

When a lot of things are running at once, hitting the open files limit on MacOS makes things start crashing. Running MacOS Server is supposed to help, but its configuration changes are inadequate if a lot of non-server activity is also going on. Every version of MacOS seems to have a different way of changing the open files limit. Here are some pages that try to follow the changes between versions.


How to globally install Composer packages with conflicting dependencies

Submitted by Darren Oh on Sun, 11/11/2018 - 18:12

Composer treats all globally installed packages as a single project with shared libraries. It cannot install multiple versions of the same library to meet the requirements of different packages. However, the cgr command can globally install composer packages with conflicting requirements. You install it as a composer package.


Forcing PowerPC iMac to boot from USB

Submitted by Darren Oh on Mon, 04/30/2018 - 08:47

Yesterday, a friend brought me a second-hand iMac G5 that he could not get the password for. He wanted to erase and reinstall the operating system. We had ordered a Leopard install disk, but the iMac kept ejecting it. I copied the install disk to a USB flash drive, but it did not appear in the list of startup disks. The instructions on the page Boot a PowerPC Apple from USB provided a workaround: