JurrianFahner

import java.security.*;

public class CVETester {
    public static void main(String... args) throws Exception {
        var keys = KeyPairGenerator.getInstance("EC").generateKeyPair();
        var blankSignature = new byte[64];
        var sig = Signature.getInstance("SHA256WithECDSAInP1363Format");

        sig.initVerify(keys.getPublic());
        sig.update("Some random text to be encrypted".getBytes());

JurrianFahner

param($java_version)
$java_install_dir = switch($java_version)
{
    8 {"C:\Program Files\Zulu\zulu-8"}
    15 {"C:\Program Files\Zulu\zulu-15"}
    default {"unknown"}
}

if ($java_install_dir -ne "unknown") {
    $old_path=(Get-ChildItem env:Path).value

JurrianFahner

git config --global core.preloadindex true
git config --global core.fscache true 

JurrianFahner

#!/usr/bin/env -S java --source 11

import java.util.stream.Stream;
import java.util.function.Predicate;


public class Test {

  public static void main(String[] args) {
     Predicate<Integer> bla = (a) ->  a > 10 ;

JurrianFahner

#!/usr/bin/env bash

find . -type f | grep "\.go" > files.txt

file='./files.txt'
lines=`cat $file`

for line in $lines; do
  echo "Bestand: $line"
  cat $line

JurrianFahner

Valuable links to docs

• GIT book
• Spring Framework
• Spring Boot
• Java
• Docker
• GitLab
• Traefik
• Nginx

JurrianFahner

https://askubuntu.com/a/821681/595802

JurrianFahner

 for branch in `git branch | grep -v HEAD`;do echo -e `git show --format="%ci %cr %H" $branch | head -n 1` \\t$branch; done | sort -r
 for branch in $(git for-each-ref --format='%(refname:short)' refs/heads);do echo -e `git show --format="%ci %cr %H" $branch | head -n 1` \\t$branch; done | sort -r

JurrianFahner

docker rm $(docker ps -a -f exited=0 --format "{{.ID}}")

JurrianFahner

ifconfig 
  # is similar to
    ip addr show

ifconfig eth0 
  # is similar to
    ip addr show eth0

ifup
  # is similar to