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Check out Nikhil Kumar’s Medium profile for more insights: https://lnkd.in/gBhjSfEU
Visit his website for detailed resources: https://nexguardians.com
Practice-Verified Codes and Commands
1. Bash Script for Network Scanning
Use the following bash script to perform a basic network scan using nmap:
#!/bin/bash echo "Enter the target IP or range:" read target nmap -sP $target
2. Solidity Smart Contract Example
Here’s a simple Solidity smart contract for a basic token:
[solidity]
pragma solidity ^0.8.0;
contract SimpleToken {
string public name = “SimpleToken”;
string public symbol = “STK”;
uint256 public totalSupply = 1000000;
mapping(address => uint256) public balanceOf;
constructor() {
balanceOf[msg.sender] = totalSupply;
}
function transfer(address to, uint256 amount) public {
require(balanceOf[msg.sender] >= amount, “Insufficient balance”);
balanceOf[msg.sender] -= amount;
balanceOf[to] += amount;
}
}
[/solidity]
3. JavaScript for Web Scraping
Use this JavaScript snippet with `axios` and `cheerio` to scrape a website:
[javascript]
const axios = require(‘axios’);
const cheerio = require(‘cheerio’);
const url = ‘https://example.com’;
axios.get(url)
.then(response => {
const $ = cheerio.load(response.data);
$(‘h1’).each((index, element) => {
console.log($(element).text());
});
})
.catch(error => {
console.error(‘Error fetching the page:’, error);
});
[/javascript]
4. Linux Command for Log Analysis
Use `grep` to filter logs for specific patterns:
grep "ERROR" /var/log/syslog
5. Windows Command for Network Troubleshooting
Use `ping` and `tracert` to diagnose network issues:
[cmd]
ping google.com
tracert google.com
[/cmd]
What Undercode Say
In the realm of cybersecurity and IT, mastering tools and commands is essential for efficiency and effectiveness. The CEH V12 certification, as highlighted by Nikhil Kumar, is a testament to advanced penetration testing skills. Tools like `nmap` for network scanning, `grep` for log analysis, and `ping` for network troubleshooting are foundational for any IT professional.
For web developers, understanding JavaScript for web scraping and Solidity for smart contract development opens doors to blockchain and decentralized applications. Bash scripting automates repetitive tasks, enhancing productivity.
In Linux, commands like grep, awk, and `sed` are indispensable for text processing and system administration. Windows users benefit from commands like ipconfig, netstat, and `tasklist` for system diagnostics.
To delve deeper into cybersecurity, explore resources like TryHackMe and NexGuardians. Continuous learning and hands-on practice are key to staying ahead in the ever-evolving IT landscape.
Remember, the journey of a thousand miles begins with a single command. Keep exploring, keep learning, and keep securing.
References:
Hackers Feeds, Undercode AI
