chun@legion:~$ cat --help
echo location
name=COM3
echo $name
#!/bin/bash
# Replace these with your actual Telegram bot token and chat ID
TELEGRAM_BOT_TOKEN="YOUR_BOT_TOKEN"
CHAT_ID="YOUR_CHAT_ID"
TELEGRAM_API_URL="https://api.telegram.org/bot$TELEGRAM_BOT_TOKEN/sendMessage"
# Replace this with your actual curl command that fetches the JSON weather data
response=$(curl -s "https://api.data.gov.sg/v1/environment/24-hour-weather-forecast
")
# Define an array of rain-related keywords
rain_keywords=("Rain" "Showers" "Thundery Showers" "Heavy Thundery Showers")
# Extract the general weather forecast using jq
general_forecast=$(echo "$response" | jq -r '.items[0].general.forecast')
# Initialize a flag to check if rain is found
rain_found=0
# Check for rain-related keywords in the general forecast
# TODO: Try implementing this! Your code should follow this general idea:
# for each keyword in rain_keywords check if the general forecast matches it. If
# so, set rain_found to 1
# If rain is detected, send an alert
if [ "$rain_found" -eq 1 ]; then
message="Weather Alert: Rain expected! General forecast is '$general_forecast'. Stay prepared!"
# Send the message to the Telegram bot
curl -s -X POST $TELEGRAM_API_URL \
-d chat_id=$CHAT_ID \
-d text="$message" > /dev/null
echo "Alert sent: $message"
else
echo "No rain expected. General forecast is '$general_forecast'."
fi
| Type | Description |
|---|---|
| Volume | Docker managed persistent storage |
| Bind Mount | Mount your host directory into the container |
docker run | It used for launching the containers from images, with specifying the runtime options and commands |
docker pull | Fetch the container images from the container registry like Docker Hub to the local machine |
docker ps | Display the running containers along with their important information like container ID, image used and status |
docker stats | Show the stats and compute usage of the current running containers |
docker stop | Halt running containers gracefully shutting down the processes within them |
docker start | Restart the stopped containers, resuming their operations from the previous state. |
#!/bin/bash
# Replace these with your actual Telegram bot token and chat ID
TELEGRAM_BOT_TOKEN="YOUR_BOT_TOKEN"
CHAT_ID="YOUR_CHAT_ID"
TELEGRAM_API_URL="https://api.telegram.org/bot$TELEGRAM_BOT_TOKEN/sendMessage"
# Replace this with your actual curl command that fetches the JSON weather data
response=$(curl -s "https://api.data.gov.sg/v1/environment/24-hour-weather-forecast")
# Define an array of rain-related keywords
rain_keywords=("Rain" "Showers" "Thundery Showers" "Heavy Thundery Showers")
# Extract the general weather forecast without jq
general_forecast=$(echo "$response" | grep -o '"forecast":"[^"]*' | sed 's/"forecast":"//')
# Initialize a flag to check if rain is found
rain_found=0
# Check for rain-related keywords in the general forecast
for keyword in "${rain_keywords[@]}"; do
if [[ "$general_forecast" == *"$keyword"* ]]; then
rain_found=1
break
fi
done
# If rain is detected, send an alert
if [ "$rain_found" -eq 1 ]; then
message="Weather Alert: Rain expected! General forecast is '$general_forecast'. Stay prepared!"
# Send the message to the Telegram bot
curl -s -X POST $TELEGRAM_API_URL \
-d chat_id=$CHAT_ID \
-d text="$message" > /dev/null
echo "Alert sent: $message"
else
echo "No rain expected. General forecast is '$general_forecast'."
fi
# .github/workflows/ci.yml
name: CI/CD Pipeline
on: [pull_request, workflow_dispatch]
jobs:
unit-tests:
runs-on: ubuntu-latest
steps:
- name: Fetch repository
uses: actions/checkout@v4
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: '20'
cache: 'yarn'
- name: Install dependencies
run: |
yarn
- name: Run unit tests
run: |
NODE_ENV=production yarn test
src: https://www3.ntu.edu.sg/home/ehchua/programming/cpp/gcc_make.html
| Code | What it does |
|---|---|
| Brings in the standard I/O library so that we can use things like std::cout |
| The entry point of every C++ program.
|
| Prints the text to the console. 👉 You can remember |
| Recall that Hence, at the end of our You can return anything, really. But usually returning 0 indicates our program has successfully executed. |
| Code | Output |
|---|---|
| |
|
| Code | Output |
|---|---|
|
|
| |
|
| Code | Visual Aid |
|---|---|
|
| Code | Visual Aid |
|---|---|
|
x and y to point to the same 10 then? |
| Code | Output |
|---|---|
|
| Operation | Result |
|---|---|
*p_arr | Move p_arr by 0 bytes, dereference to get arr[0] |
*(p_arr + 1) | Move p_arr by 4 bytes, dereference to get arr[1] |
*(p_arr + 2) | Move p_arr by 8 bytes, dereference to get arr[2] |
char* str2 but not char str[] ?src: https://chessman7.substack.com/p/how-your-code-executes-a-guide-to
| Code | Output |
|---|---|
|
Blank page in Firefox (dark mode)
Dev Tools in Firefox
The Console in Firefox
Firefox's browser console is able to catch errors and pre-empt the results of executing a block of code before you actually run it. In the screenshot above, you can see ReferenceError: i is not defined in grey text, because the program has not yet run but the console knows what the result is going to be. This tells me as the programmer to look for the problem and fix it before running the code.
The variadic function sum. Note how the console is able to follow along as I type the function call and shows me the return value before I execute the line.
This is my first page
``` Then save the file as `index.html`. Congratulations, that is your first HTML file ready. To view it in the browser, naviate to the file in your finder/library and open it with a browser of your choice (see below).