I am trying to use an “Arduboy,” based on the Arduino Leonardo, with the Arduino IDE. I cannot upload the example code, however, because of the following error: Before you mark this as a duplicate, here are all of the things I have tried Adding myself to the dialout group that /dev/ttyACM0 can be …
Pyaudio does not recognize ReSpeaker usb microphones InputChannels
I have connected an USB microphone (ReSpeaker 4 Mic Array (UAC1.0)) to my Gentoo linux machine. I would like to use that usb microphone for recording with pyaudio. Pyaudio detects the USB device but does not detect its Input Channels. This is the relevant part of the output from: […] ‘maxOutputCha…
Running flask app automatically after boot does not work correctly
I am setting up Flask project in Raspberry Pi (python 2.7). It runs perfectly when the python script is called manually. However, I am trying to run the script automatically after boot, it cannot run properly. I have tried modifying /etc/profile to run the script after boot; /etc/profile start_script.py I exp…
udpsink doesnt seem to stream anything but filesink works
I have trouble streaming pulse audio monitor via rtp to an audio player like vlc or gst-launch with udpsrc this command works and the file has audio that is currently being played but when i use this, vlc (from an android phone) tells me that it cannot play the stream with uri rtp://ip-addr:4000 and gst-launc…
How to view stdout in AWS environment?
Below is the lambda function: executed with NodeJS runtime ( as serverless app) that writes the incoming event record to stdout By definition, console.log prints to stdout, as mentioned here, but I need to go through cloud watch logs, as this is AWS serverless app: What is the correct way to view stdout in AW…
How to extract multiple *.tgz files to multiple directories using PERL?
I am learning PERL lang. I have forced (and little confused) the issue with extracting *.tgz files. My point which I want to achieve is to extract multiple *.tgz files to multiple folders. So the structure comes: I want to extract these files to directories: Can someone help me with this, or give some hints h…
Shell: Pass function with arguments as function argument
I’m working on a shell program to automatise my Arch (mandatory btw) installation. To make it more interactive, I’ve built the following function: I’ve succeeded in passing an “echo Hello World!” as an argument and having it run. I’ve also been able to pass another function…
Group By and Sum from .txt file in Linux
Following a suggestion from @tripleee, I’m posting another question for a coding issue I’m having trying to be more specific with sources and expected results. My source .txt file is quite over populated with lines and using AWK, I: extract only rows identified by a specific code. parse the conten…
Bash increase pid kernel to unlimited for huge loop
I’ve been try to make cURL on a huge loop and I run the cURL into background process with bash, there are about 904 domains that will be cURLed and the problem is that 904 domains can’t all be embedded because of the PID limit on the Linux kernel. I have tried adding pid_max to 4194303 (I read in …
To add certain characters at the end of line when the line ends with “:”
I have a text file which contains two types of entries as below: I want to add NA at the end of line where “/opt/Check/D1/test_1237” does not exist, which means the line ends with “:”. Please let me know how to do this. I tried doing like this But this adds NA to each line..I want to a…