Read the notes for the TWS_MAJOR_VRSN variable in twsstartmacos.sh. It says this:

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#?? TWS_MAJOR_VRSN

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#???? Specifies the major version number of TWS to be run. If you are

#???? unsure of which version number to use, run TWS manually from the

#???? icon on the desktop, then click Help > About Trader Workstation. In the

#???? displayed information you'll see a line similar to this:

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#?????? Build 10.19.1f, Oct 28, 2022 3:03:08 PM

#

#???? The major version number is 10.19. (Note that this is different from

#???? the equivalent Windows and Linux settings because the macOS installer

#???? includes the period in the install folder name).

#

#???? Do not include the rest of the version number in this setting.

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But you appear to have:

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TWS_MAJOR_VRSN=1019

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Richard

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You can have the main TWS window minimized by using this setting in config.ini:

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MinimizeMainWindow=yes

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I can’t guarantee that this will work consistently on macOS as I don’t have access to a macOS machine. TWS has a habit of un-minimizing itself when certain things happen, and IBC has to try and catch that and re-minimize. It may well not catch all cases, since few people use this setting (and neither do I, so I’d never notice unless someone tells me).

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On macOS, it’s not possible to hide the terminal window which displays the information about the log file. The Linux and Windows scripts provide a means to do this, but this doesn’t carry over to macOS. I dare say that there is technically a way to do it, but without being able to get my hands on a macOS computer I can’t really figure it out (if anyone reading this has any ideas, please let me know).

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Having said that, there is actually a way to run without the terminal window, but it has some disadvantages. If you look at the IBC log file you’ll see a line like this:

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Starting IBC with this command:

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The following line is a command that you can run directly from a command shell (presumably Bash), and it will run IBC and TWS in exactly the same way, but without the ‘wrapping’ provided by the normal shell script (if the command includes a -Drestart=… switch, remove it). Also redirect stdout and stderr to a file using normal redirection operators, to capture log output from IBC .

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The primary disadvantage is that some IBC features won’t work properly: for example, autorestart will succeed in restarting TWS, but you’ll have to re-authenticate via 2FA every time (for a live account). (Actually I need to verify that that last statement is really true: the 2FA automation probably should work provided you don’t let the 2FA prompt time out on IBKR Mobile).

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Frankly I see no real benefit in trying to hide TWS from view. It won’t save any resources. In my view, a much better approach is to run TWS in a virtual machine that’s used for nothing else, and access it when needed via VNC or whatever remote access mechanisms macOS provides.

Richard