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Here are some steps to try if you're getting an error mounting /dev/nvme0n1p6 in Ubuntu 23.10:

• Open the Disks program
• Select the disk that doesn't mount
• Click the Gears icon or Additional Partition Options button
• Select Edit Mount Options
• Disable User Session Defaults
• Click OK in the Mount Options dialog box
• Repeat for each drive that gives an error message

arsho

• Check versions of gcc, g++, and nvcc:

gcc --version
gcc (Ubuntu 13.2.0-4ubuntu3) 13.2.0
g++ --version
g++ (Ubuntu 13.2.0-4ubuntu3) 13.2.0
nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2023 NVIDIA Corporation
Built on Tue_Aug_15_22:02:13_PDT_2023

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Disk usage analyzer

• Open a terminal and write:

baobab

• It will open an window that shows disk usage.

References

• Ubuntu Baobab page

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• Generate SSH key with passphrase and the filename:

ssh-keygen -t ed25519 -C "your_email@example.com"

• Go to the Settings > SSH and GPG keys page of Github
• Click New SSH key
• Copy the SSH key file to your clipboard, here the public key file is in ~/.ssh/id_ed25519.pub:

cat ~/.ssh/id_ed25519.pub

arsho

class Solution {
    // Function to return Breadth First Traversal of given graph.
    public ArrayList < Integer > bfsOfGraph(int V, ArrayList < ArrayList < Integer >> adj) {
        ArrayList < Integer > ans = new ArrayList < Integer > ();
        int[] color = new int[V];
        color[0] = 1;
        Queue < Integer > q = new LinkedList < > ();
        q.add(0);
        ans.add(0);
        while (q.size() != 0) {

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Four numbers each from -1 to 1 that sum up to 1

You can use Python's combination with replacement method.

from itertools import combinations_with_replacement
import csv

def get_four_numbers(target_sum=100):
 result = []

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#include <bits/stdc++.h>
using namespace std;

long merge_sorted_arrays(long ar[], long temp[], long left, long mid, long right) {
    long inversion_count = 0;
    long left_pos = left;
    long right_pos = mid + 1;
    long current_pos = left;
    while (left_pos <= mid && right_pos <= right) {
        if (ar[left_pos] <= ar[right_pos]) {

arsho

Scenario

• In Ubuntu the Ethernet connection was shown as unmanaged wired connection.
• This happened after using sudo pppoeconf to configure a pppoeconfiguration.

Solution

• Open /etc/NetworkManager/NetworkManager.conf with sudo previlege:

sudo gedit /etc/NetworkManager/NetworkManager.conf

• Change the line managed=false to managed=true

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Solution to: Stuck on Dell logo in Dual Boot Dell Machine

Machine Information:

• Model: Dell G5 5587
• Processor: Intel core i7-8750H
• Ram: 16GB
• Graphics: NVIDIA 1060 GeForce GTX 1060 Mobile
• SSD: 256GB
• HDD: 1TB

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Scenario

• Upgraded to Ubuntu 20.04 from Ubuntu 18.04
• Previously the graphics card was shown nVidia in Ubuntu about section
• Now its llvmpipe (LLVM 10.0.0, 256 bits) / llvmpipe (LLVM 10.0.0, 256 bits)

Solution

• Install all necessary drivers:

sudo ubuntu-drivers autoinstall