My steps for success right now:
A bash script for managing ssh-agent that I use for Ubuntu and OSX.
Started as a variation from this classic on Stack Overflow How to check if ssh-agent is already running and then adapted it to align with behaivor I want.
This version does the following:
A script (that needs some work) that documents for me how to setup and launch an autossh session to a cloud server. Not really useful for others.
If you want to setup your own server though the steps are: Create the remote cloud server autossh account (Only need to do this once)
useradd -m -s /bin/false autossh
mkdir ~autossh/.ssh && chmod 700 ~autossh/.ssh
touch ~autossh/.ssh/authorized_keys && chmod 600 ~autossh/.ssh/authorized_keys
chown -R autossh.autossh ~autossh/.ssh
The Windows Linux Subsystem (WSL) comes with /win/c mounted world read-write and is setup for compatibility between windows and linux by putting all your windows paths into your linux system path. This is great for some usecases. Some tools get grumpy having these world writable directories a users path. While this doesn't break them but it can cause annoying warning messages.
On the other hand, when you don't care about the windows tools being in your path, it might make you more sane not to see those error messages, and also to limit the number of places tools look for supporting binaries not-relevant to themselves.
: warning: Insecure world writable dir /mnt/c in PATH, mode 040777
You can remove all those /mnt/c paths from your $PATH with the following line:
Chef omnibus build script to automate a build of chef for ARM. Primary goal to support rasbian_bootstrap.
curl -L https://git.io/fpiRv | sudo bash
The core details derived from Mattray's Chef14 ARM on the Beaglebone Black post.
This is a fully scripted build and install of chef for Raspbian (or any other deb).
rhash is a great utiltiy for computing hash sums. Even across full directory structures. Handy for creating checksum file manifests to verify complete transfer of files to another location.
Finds any *.sha256 files and assumes they are a checksum manifest for the directory of the same name. Runs a validation of each manifest found and reports if the file doesn't exist or if the checksum does not match.
The point of this is to use the rhash-check.py in Jupyter notebook environments where you can't use rhash directly. If you have rhash has built into it a better alternative to the rhash-check.py script:
rhash -cr --crc-accept=sha256 directory/
I try to avoid using the GUI to configure/run barrier so I created a simple bash script barrier-client.sh to launch my barrier client. It reads from a .config/barrier.cfg file I created to determine the client name and server to connect to.
cat ~/.config/barrier.cfg
BARRIER_CLIENT_NAME=${HOSTNAME}
BARRIER_SERVER=gilbert.lan:24800
This expects the client to already be configured to trust the server. That trust is managed by the ~/.local/share/barrier/SSL/Fingerprints/TrustedServers.txt which should have the fingerprint of the server.
| [{"id":"f60f0a99.5906c8","type":"Bme280","z":"fba67b76.39a018","name":"","bus":"1","address":"0x76","topic":"bme280","extra":false,"x":400,"y":60,"wires":[["377e604a.4c94e","b74f0f92.d5eb9","b834c5cf.3c4288"]]},{"id":"b9c6f89.10e1908","type":"debug","z":"fba67b76.39a018","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":710,"y":80,"wires":[]},{"id":"384a3755.8e8a88","type":"inject","z":"fba67b76.39a018","name":"trigger every 2 seconds","topic":"","payload":"","payloadType":"date","repeat":".1","crontab":"","once":false,"onceDelay":"2","x":170,"y":120,"wires":[["f60f0a99.5906c8"]]},{"id":"377e604a.4c94e","type":"change","z":"fba67b76.39a018","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload.temperature_C","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":700,"y":160,"wires":[["b9c6f89.10e1908","74c6eeea.4f6cd"]]},{"id":"74c6eeea.4f6cd","type":"ui_chart","z":"fba67b76.39a018","name":"","group":"400dc1b.dc7e04","order":0,"w |
LoRa is a Low Power Wide Area Network (LPWAN).
Not a replacement for wifi. Great for low bandwidth sensor networks.