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User since Oct 28, 2022
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0 likes • Jan 12, 2023
#Originally made by Isaac Cook
#Modified by Leif Messinger [server_ip [server2_ip [...]]]
#To be run locally on a linux computer
if [ -e ~/.ssh/ ];
echo "SSH Key already exists on local machine"
echo "Generating SSH key on local machine"
ssh-keygen -t rsa #generates id_rsa and
chmod -R 700 ~/.ssh #Sets permissions of ssh folder
ssh-add #Adds keys (and passwords?) to ssh_agent. (hopefully doesn't require password)
echo "Loading client public key into memory"
for server
echo "Adding client public key to $server remote server authorized keys"
#Idiot Isaac Cook didn't know about ssh-copy-id
#ssh-copy-id even checks if your key already exists
#In fairness, I didn't either until researching ssh-add
ssh-copy-id -i ~/.ssh/ $server #In theory, this should prompt for a username
#ssh $server "mkdir -p ~/.ssh; #Make the folder if not already made
# echo \"$pubKey\" >> ~/.ssh/authorized_keys; #Append your public key to the server's authorized_keys
# chmod 700 ~/.ssh && chmod 600 ~/.ssh/authorized_keys" #Set the correct permissions of those files
#echo "Adding server public key to local authorized keys"
#ssh $server "ssh-copy-id -i ~/.ssh/ \$SSH_CLIENT" #this might need some awk, as $SSH_CLIENT spits out clientip portnumber
echo "Displaying server public key"
ssh $server "cat ~/.ssh/"
#Though, he did give me a good idea
echo "Displaying keys authorized on $server (you can paste them in your authorized_keys file)"
ssh $server "cat ~/.ssh/authorized_keys"
#echo "Appending keys authorized on $server to your local authorized_keys"
#ssh $server "cat ~/.ssh/authorized_keys" >> ~/.ssh/authorized_keys
echo "SSH keys schronized successfully!"

SAM 5 words with bitmaps

0 likes • Oct 23, 2022
//Leif Messinger
//Finds all sets of 5 5 letter words that don't have duplicate letters in either themselves or each other.
//First it reads the words in and puts them in groups of their bitmasks
//After that, we recurse on each group. Before doing that, we remove the group from the set of other groups to check it against.
#include <cstdio> //getchar, printf
#include <cassert> //assert
#include <vector>
#include <set>
#include <algorithm> //std::copy_if
#include <iterator> //std::back_inserter
#define CHECK_FOR_CRLF true
#define MIN_WORDS 5
#define MAX_WORDS 5
#define WORD_TOO_LONG(len) (len != 5)
const unsigned int charToBitmask(const char bruh){
assert(bruh >= 'a' && bruh <= 'z');
return (1 << (bruh - 'a'));
void printBitmask(unsigned int bitmask){
char start = 'a';
while(bitmask != 0){
if(bitmask & 1){
bitmask >>= 1;
//Pointer needs to be deleted
const std::set<unsigned int>* getBitmasks(){
std::set<unsigned int>* bitmasksPointer = new std::set<unsigned int>;
std::set<unsigned int>& bitmasks = (*bitmasksPointer);
unsigned int bitmask = 0;
unsigned int wordLength = 0;
bool duplicateLetters = false;
for(char c = getchar(); c >= 0; c = getchar()){
if(CHECK_FOR_CRLF && c == '\r'){
if(c == '\n'){
if(!(WORD_TOO_LONG(wordLength) || duplicateLetters)) bitmasks.insert(bitmask);
bitmask = 0;
wordLength = 0;
duplicateLetters = false;
if((bitmask & charToBitmask(c)) != 0) duplicateLetters = true;
bitmask |= charToBitmask(c);
return bitmasksPointer;
void printBitmasks(const std::vector<unsigned int>& bitmasks){
for(unsigned int bruh : bitmasks){
putchar(','); putchar(' ');
//Just to be clear, when I mean "word", I mean a group of words with the same letters.
void recurse(std::vector<unsigned int>& oldBitmasks, std::vector<unsigned int> history, const unsigned int currentBitmask){
//If there's not enough words left
if(oldBitmasks.size() + (-(history.size())) + (-MIN_WORDS) <= 0){
//If there's enough words
if(history.size() >= MIN_WORDS){
//Print the list
//To make it faster, we can stop it after 5 words too
}else if(history.size() >= MAX_WORDS){
//Print the list
//Thin out the array with only stuff that matches the currentBitmask.
std::vector<unsigned int> newBitmasks;
std::copy_if(oldBitmasks.begin(), oldBitmasks.end(), std::back_inserter(newBitmasks), [&currentBitmask](unsigned int bruh){
return (bruh & currentBitmask) == 0;
while(newBitmasks.size() > 0){
//I know this modifies 'oldBitmasks' too. It's intentional.
//This makes it so that the word is never involved in any of the child serches or any of the later searches in this while loop.
const unsigned int word = newBitmasks.back(); newBitmasks.pop_back();
std::vector<unsigned int> newHistory = history;
recurse(newBitmasks, newHistory, currentBitmask | word);
int main(){
const std::set<unsigned int>* bitmasksSet = getBitmasks();
std::vector<unsigned int> bitmasks(bitmasksSet->begin(), bitmasksSet->end());
delete bitmasksSet;
recurse(bitmasks, std::vector<unsigned int>(), 0);
return 0;

C++ SigFigs

0 likes • Sep 7, 2022
#include <iostream>
#include <cstring>
int main(int argc, char** argv){
//With decimal
if(strstr(argv[1], ".") != nullptr){
int i = 0;
//Skip i to first non 0 digit
while(argv[1][i] < '1' || argv[1][i] > '9') ++i;
//If digit comes before decimal
if((argv[1] + i) < strstr(argv[1], ".")){ //Good example of pointer arithmetic
std::cout << strlen(argv[1] + i) - 1 << std::endl; //Another good example
//If digit is after decimal
std::cout << strlen(argv[1] + i) << std::endl;
//Without decimal
int m = 0;
int i = 0;
while(argv[1][i] < '1' || argv[1][i] > '9') ++i; //In case of some number like 0045
for(; argv[1][i] != '\0'; ++i){
if(argv[1][i] >= '1' && argv[1][i] <= '9') m = i + 1;
std::cout << m << std::endl;
return 0;

QM Helper

0 likes • Mar 22, 2022
//QM Helper by Leif Messinger
//Groups numbers by number of bits and shows their binary representations.
//To be used on
const minterms = prompt("Enter your minterms separated by commas").split(",").map(x => parseInt(x.trim()));
const maxNumBits = minterms.reduce(function(a, b) {
return Math.max(a, Math.log2(b));
const bitGroups = [];
for(let i = 0; i < maxNumBits; ++i){
for(const minterm of minterms){
let outputString = (minterm+" ");
//Count the bits
let count = 0;
for (var i = maxNumBits; i >= 0; --i) {
if((minterm >> i) & 1){
outputString += "1";
outputString += "0";
document.body.textContent = "";"white-space", "pre");
for(const group of bitGroups){
for(const outputString of group){
document.body.textContent += outputString + "\r\n";

Mee6 Spam Calculator

0 likes • Mar 10, 2022
//Use at
//Higher the spammy stat, the more spammy that person is.
//This is because mee doesn't give experience to people who post more comments in a minute.
function statBlock(title, value){
let elm = document.createElement("div");
elm.className = "leaderboardPlayerStatBlock";
let titleElm = document.createElement("div");
titleElm.className = "leaderboardPlayerStatName";
titleElm.textContent = title;
let valueElm = document.createElement("div");
valueElm.className = "leaderboardPlayerStatValue";
valueElm.textContent = value;
elm.remove = function(){
return elm;
for(let player of Array.from(document.getElementsByClassName("leaderboardPlayer"))){
if(player.spamminess) player.spamminess.remove();
let messages = null;
let experience = null;
const statBlockArray = Array.from(player.querySelectorAll(".leaderboardPlayerStatBlock"));
for(let statBlock of statBlockArray){
const statName = statBlock.querySelector(".leaderboardPlayerStatName").textContent;
const text = statBlock.querySelector(".leaderboardPlayerStatValue").textContent;
const number = ((text.includes("k"))? (text.replace("k","") * 1000.0) : +(text));
messages = number;
}else if(statName.includes("EXPERIENCE")){
experience = number;
const stats = player.querySelector(".leaderboardPlayerStats");
const messagesElement = stats.firstChild;
const spamminess = ((messages/experience)*2000.0).toFixed(2);
player.spamminess = stats.insertBefore(statBlock("SPAMMINESS", spamminess), messagesElement);
#Leif Messinger
#For when you want to search a lot of words in a file fast
#Arg 1 is the argument the list of words you want to search
#Arg 2 is the file you want to search
#-z means that it looks at the file as a whole, just treating newlines a characters.
#-r is regex. Needed for $, even tho the documentation says you don't need it. They are liars.
#First command replaces all . with \. and all - with \-
#Second command takes all newlines and replaces them with )|(
#Third command takes the trailing |( and deletes it
#Forth command puts a /( at the start
#Fith command puts /!d at the end. This tells it to not delete any lines that match the pattern.
#The second sed takes the output of the first sed as a command that searches any of the combined words
#-f - takes a command from the input
sed -z -r -e 's/\./\\\./g ; s/\-/\\\-/g' -e 's/\n/\)\|\(/g' -e 's/\|\($//' -e 'i/\(' -e 'a/!d' $1 | sed -r -f - $2


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