How can I run a command in a terminal at startup then have the terminal close while command continues

Ok here is what I figured out

First no fancy line breaks only continuous text

Select /bin/bash from drop down menu

nohup dns-sd -R "Ion AirCopy" _uscan._tcp local 80 "note=AirScan s400w" "duplex=F" "is=adf" "cs=color" "pdl=image/jpeg" "uuid=4509a320-00a0-008e-00b6-000507510ecc" "rs=eSCL" "representation=http://192.168.0.117:80//Library/WebServer/Documents/icon.png" "vers=2.2" "usb_MDL=AirCopy" "usb_MFG=Ion" "mdl=AirCopy" "mfg=Ion" "ty=Ion AirCopy" "adminurl=http://192.168.0.117:80/index.php" "txtvers=1" >/dev/null 2>&1 &

This works pasting into automator. The process keeps running and no window is seen. It eliminates the constant spinning disc at the top status bar.

Why I even need automator is beyond me. Add insult to injury that it does not seem documented rather is "guessware" and subject to Apple's Changes on a whim. The need for automator makes one unnecessary, and difficult step when trying to mass produce a solution. Why an I simply not able to run a shell script at start up? I guess that's what you get from "fluffy" OS.

What a convoluted solution. I would hope for something more elegant on a Mac but unless you are the elite "Apple developer" you get nothing.

I pasted this into automater earlier and it works

#!/bin/bash
nohup dns-sd -R "Ion AirCopy" _uscan._tcp local 80 "note=AirScan for s400w" "duplex=F" "is=adf" "cs=color" "pdl=image/jpeg" "uuid=4509a320-00a0-008e-00b6-000507510ecc" "rs=eSCL" "representation=http://192.168.0.117/icon.png" "vers=2.2" "usb_MDL=AirCopy" "usb_MFG=Ion" "mdl=AirCopy" "mfg=Ion" "ty=Ion AirCopy" "adminurl=http://192.168.0.117/index.php" "txtvers=1" &
Exit

Then I tried it your way and now can not even post my previous version into automator . No matter what I do now I get The action run shell script encountered an error, "DNSService Call Failed 65540"

Something is very strange for such inconsistent behavior

BobHarris,

Thanks, this is similar to what I came up with but thought I needed a full blown shell script, whereas you seem to show the single command . So I remain a little confused on the proper implementation.

I have a great solution for supporting a previously unsupported scanner but this part seems to be clunky

Let me clarify,

I have developed a third party driver for a scanner\. That scanner was abandoned by Apple and Manufacturer(s) long ago with 64 bit code.

Because the new method for scanning on macOS is eSCL/AirScan it is all web based. So I have some PHP code that installs into the MacOS web server and an executable for OSX_64 (none for M1 Chip yet), that together do the work for communicating between like preview.app or imaging.app and the scanner (by way of embeded web server and PHP) . So for the purposes of installing I need to be able to CONSISTENLTLY produce the code that then user will plug into Automator . As I understand it though "nohup" itself may be all I need, but not sure how it works either. So I need to be able to CONSISTENTLY generate the WORKNG code (seems problematic) in PHP that works in Automator. I now have two files that look nearly identical to me one works fine in automator and the other does not. I am beginning to suspect an invisible character like an EOL. As I said it is all generated in PHP.

Automator for example says to insert the shell script . My shell script starts with #1/bin/bash but do I need that in automator or just select /bin/bash from the drop down menu. Is automator "Guessware" or is there a real manual for it somewhere?

BobHarris

Although your suggestion "seems" to work , unfortunately it leaves a turning gear (running forever in my case) in the upper bar of the display. I would not call this exactly silent and in fact may be worse than leaving an open window somewhere.

I would love to find out if "nohup" works for this and how it works.