![]() When I get back to a Mac to run some more tests, I'll clean up the code. There are a few developers lurking around here that do answer questions, though not if they're buried down in a framework somewhere. Few postings get answers, and the volume of questions over there means the folks from Apple that do post over there are limited to picking and choosing and answering the more interesting questions. Massive hype aside, statistics-generated source code will require review and rework at best, and more than a little of the generated code that has gotten posted around here is just wrong.Ī completely different approach to your situation here is to use the Lightning cable that most Apple Bluetooth keyboards offered, and keep the keyboard wired full time.Ī previous poster suggested posting over in the Apple Developer forums, and I don't think this'll get much attention over there. If you're using ChatGPT or such to generate source code, please stop. That's two print commands in a row, and the second print command is what the first command tries to print.Īs it's been tried here before. I=$(system_profiler SPBluetoothDataType | grep Battery | grep -o '.$' | sed 's/.\ isn't a valid command. The result looks like this:įor those interested here is the final shell script: #!/bin/bash I use a Geektool image geeklet to display an empty battery png, then run a Geektool shell geeklet to run the battery level script. I run a system_profiler command to get the current battery level of my Apple keyboard. They look almost identical but the change in character got the script to work. Still not sure why I couldn't echo a pipe charater, but I got my script to work by using a lower case el ' l ' instead of the pipe ' | '. Somebody else probably has some recommendations from this millennium. Though now ancient (and there’s undoubtedly newer and better now available), I found the Unix for the Impatient book useful for learning. There are many other online resources available. Here’s an older (bash-focused) shell scripting primer from Apple: Shell Scripting Primer Here’s one of various zsh intros available: I’ve been making mistakes with Unix since ~1985. Like you, I'm new to Bash scripting, so I'm learning as I go. Being you want or need the older versions here, you get to sort this out in your configuration. I’d tend to guess it has to do with the -e, as that enables backslashes. The version of bash in current macOS versions is antediluvian. What happens as far back as OS X 10.9? Donno. The two is a constant, that field sets the display width, and halves the number of bars that get shown. Seeing as my current capacity was 77, I expected to see 7 bars but got unexpected results printing part of formatting code and no bars. ![]() The print command prints the appropriate number of spaces, and then the tr translates the output spaces into output barsģ. It’s some bash shenanigans that draw the graph. What's happening in the second last printf command? I see that it prints the pipe characters. ![]() Bash case syntax does shell patterns here, and not ranges. We were discussing that in replies above. I did work with the code you posted above and ended with this: … I have a couple of questions. Irvin_a -e dosn't work in Mavericks which runs Bash 3.2. ![]()
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