Fix: VMWare workstation 17 shared folder between host windows and Linux VM

vmware-hgfs client shows up shared folder but nothing shown under /mnt/hgfs

run the following to fix this issue.
 

 sudo vmhgfs-fuse .host:/ /mnt/hgfs/ -o allow_other -o uid=1000

Fixed: failed to execute script pyinstaller-entry-point (ADE start)

Docker may not be installed on the machine,this can be an issue as ade is just a wrapper on the docker. you can use the following page https://docs.docker.com/engine/install/ubuntu/ for installation of docker or short instructions are as below.

	sudo apt-get remove docker docker-engine docker.io containerd runc
	sudo apt-get install ca-certificates curl gnupg lsb-release
	sudo mkdir -p /etc/apt/keyrings
	curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
	echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
	$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
	sudo apt update
	sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin docker
	sudo usermod -aG docker $USER
	sudo service docker start
	sudo chmod o+rw /var/run/docker.sock
	ade start

view raw gistfile1.txt hosted with ❤ by GitHub

Replay udp data using tcpreply

tcpreplay is primarily designed for replaying packets at the network level and may not be suitable for replaying UDP packets. Thus bit of work is needed to replay this data. update the input.pcap to us your desired MAC id's

tcprewrite --enet-dmac=destinationMAC --enet-smac=sourceMAC -i input.pcap -o output.pcap

Replace destinationMAC with the MAC address of the destination machine or network interface you wish to send the UDP packets to. Replace sourceMAC with the MAC address of the network interface you plan to send the packets from. Now you would be able to replay this packets

sudo tcpreplay -i input.pcap -o output.pcap

test script to read this packets ( Python3 script is provided to read data on port 9999 )

import socket

UDP_IP = "0.0.0.0"
UDP_PORT = 9999

sock = socket.socket(socket.AF_INET, # Internet
                     socket.SOCK_DGRAM) # UDP
sock.bind((UDP_IP, UDP_PORT))

while True:
    data, addr = sock.recvfrom(1024) # buffer size is 1024 bytes
    print("received message: %s" % data)

Failed init_port fastrtps_port7412: open_and_lock_file failed

Use following to fix the RTPS_TRANSPORT_SHM Error 

	ros2 daemon stop
	export RMW_IMPLEMENTATION=rmw_cyclonedds_cpp
	ros2 node list

view raw init_port fastrtps_port7412_fix.sh hosted with ❤ by GitHub

Fix for HDMI to an external monitor:

Run the commands below with the HDMI connected to my monitor:

• xrandr --listproviders (to make sure you have NVIDIA-G0 as a provider)
• xrandr --setprovideroutputsource NVIDIA-G0 modesetting 
• xrandr --auto

Ref: Found the info in the last post in this thread: https://www.linuxquestions.org/questions/debian-26/debian-11-bullseye-on-optimus-laptop-not-detecting-external-screen-4175690446/

Solution : how to check if the drive is ssd or hdd ?

Command :  lsblk -o NAME,ROTA

Result: 

NAME   ROTA
sda       0
└─sda1    0
sdb       1
├─sdb1    1
├─sdb2    1
├─sdb3    1
├─sdb4    1

nvmep1    1

 1 for hard drive and 0 for ssd.

Add the pem certificate to linux

Add the ca-certificate to access the site.

1# Extract pem files 2unzip cert-cas.zip 3cd cert-cas 4 5# convert all pem files to crt 6for f in *; do mv -- "$f" "${f%.pem}.crt"; done 7 8sudo mkdir /usr/local/share/ca-certificates/extra 9sudo cp *.crt /usr/local/share/ca-certificates/extra/root.cert.crt 10sudo update-ca-certificates

certificates will be available ( below shows confirmation )

1test@testM1:/usr/local/share/ca-certificates/extra$ sudo update-ca-certificates 2Updating certificates in /etc/ssl/certs... 3rehash: warning: skipping duplicate certificate in cert-cas.pem 43 added, 0 removed; done. 5Running hooks in /etc/ca-certificates/update.d... 6 7Adding debian:test.com-cachain.pem 8Adding debian:test.com-rootca.pem 9Adding debian:test.com-subca.pem 10done. 11done. 12

• 
  

Find files in dir not contain a string

 find . -iname "*.md" -exec grep -Li "All rights reserved" {} \+

Error: GitHub.DistributedTask.ObjectTemplating.TemplateValidationException Unrecognized named-value: 'secrets'

 Error: GitHub.DistributedTask.ObjectTemplating.TemplateValidationException: The template is not valid. /home/runner/work/test/test/./.github/actions/test/action.yml (Line: 22, Col: 14): Unrecognized named-value: 'secrets'. Located at position 1 within expression: secrets.PASS

Fix: actions does not have access to secrets, only the workflow is allowed to access secrets.

workflow to pass the secret as:

with:
  secret_input: ${{ secrets.SUPER_SECRET }}

And then, in action.yml,

inputs:
  secret_input: 
     description: "..."
     required: true
...

runs:
.....
  - name: .....
    env:
      MY_SECRET: ${{ inputs.secret_input }}

fix: docker: Error response from daemon: could not select device driver "" with capabilities: [[gpu]].

 add export ADE_DISABLE_NVIDIA_DOCKER=1  to .aderc at the start