Computer Tips - Programming, Cybersecurity and Tech Tutorials

import numpy as np import matplotlib.pyplot as plt x_pos = np.linspace(0,5,10) y_pos = np.linspace(0,10,10) x_dir = y_dir = np.zeros((10,10)) plt.quiver(x_pos, y_pos, x_dir, y_dir, scale=1)

If you want to change the section name from Algorithm to Procedure, you just need to use the \floatname command while the code remains unchanged. The code for an algorithm: \begin{algorithm} \caption{Test}   \begin{algorithmic}[1]     \State Hello!   \end{algorithmic} \end{algorithm} Output: Now to change the label, add the following command before \begin{document} . \floatname{algorithm}{Procedure} The code remains the same. Output: This LaTeX tip relabels floats produced by the algorithm package from Algorithm to Procedure using the \floatname command, without changing the algorithm body itself. It is handy when a venue or style guide expects a particular caption label. The same \floatname approach works for renaming other float types too.

Error: If you are getting build failures in Xcode for a C++ program with similar errors, then try this fix. 15 duplicate symbols for architecture x86_64 ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) Solution: You can avoid declaring variables in the header and move them to implementation. Or you can declare all the variables in the header file as static.

Pi-hole is a network-wide ad-blocking DNS server. iCloud Private Replay is a secure internet relay service. While Pi-hole can protect you from unwanted tracking and advertisements, iCloud Private Relay provides you with privacy when you browse the web in Safari. When you join the Pi-hole network with a device with iCloud Private Relay enabled, Pi-hole returns NXDOMAIN response for mask.icloud.com and mask-h2.icloud.com as per Apple recommendation. To disable this feature in Pi-hole and allow the functioning of iCloud Private Relay, go to /etc/pihole/pihole-FTL.conf and set  BLOCK_ICLOUD_PR=false . References: https://pi-hole.net/ https://support.apple.com/en-us/HT212614 https://developer.apple.com/support/prepare-your-network-for-icloud-private-relay/ https://docs.pi-hole.net/ftldns/configfile/#icloud_private_relay

This is a sample code to generate SHA256 in C++ using CryptoPP. For the first string in a vector: std::vector<std::string> stringVector{"abcde", "fghij", "klmno", "pqrst", "uvwxyz"}; byte digest[SHA256::DIGESTSIZE]; SHA256().CalculateDigest(digest, (const byte*)stringVector.data(), stringVector.size()); For an entire vector of string: std::vector<std::string> stringVector{"abcde", "fghij", "klmno", "pqrst", "uvwxyz"}; HexEncoder encoder(new FileSink(std::cout)); std::string digest; SHA256 hash; for(auto str: stringVector) {  hash.Update((const byte*)str.data(), str.size());  }  digest.resize(hash.DigestSize());  hash.Final((byte*)&digest[0]); std::cout << "Digest: "; StringSource(digest, true, new Redirector(encoder)); std::cout << std::endl; This sample computes a SHA-256 hash in C++ with the Crypto++ library, applied to data held in a vector of s...

Follow these steps to share a folder from your host macOS to guest Kali Linux running inside VirtualBox. Step 1: From your macOS, Go to "System Preferences... >> Sharing" Step 2: Enable the File Sharing option and add a folder to share Step 3: Open VirtualBox >> Select Kali Linux (or any other image) Step 4: Click on "Settings >> Share Folder" Step 5: Click on Add new shared folder button and add the same folder you previously added in macOS from Step 2 Step 6: Log in to your Kali Linux image Step 7: Open Terminal and type the command "sudo adduser $USER vboxsf" Step 8: Reboot Kali Linux

Error: vb_perf.cpp: In function ‘int main(int, const char**)’: vb_perf.cpp:63:23: error: variable ‘main(int, const char**)::rusage rusage’ has initializer but incomplete type    63 |         struct rusage rusage = { };       |                       ^~~~~~ vb_perf.cpp:64:19: error: ‘RUSAGE_SELF’ was not declared in this scope    64 |         getrusage(RUSAGE_SELF, &rusage);       |                   ^~~~~~~~~~~ vb_perf.cpp:64:9: error: ‘getrusage’ was not declared in this scope; did you mean ‘rusage’?    64 |         getrusage(RUSAGE_SELF, &rusage);       |         ^~~~~~~~~       |         rusage Solution: Include this header to your source code: #include <...