Peter Reisinger pete911

## find raspberry pi on the network
`sudo nmap -sP 192.168.1.0/24 | awk '/^Nmap/{ip=$NF}/B8:27:EB/{print ip}'` update `192.168.1.*` accordingly

## unixhttpc.go
package main

import (
	"context"
	"flag"
	"fmt"
	"io"
	"net"
	"net/http"
	"os"

## JerseyWithSSL.java
package com.example.jersey;

import javax.net.ssl.*;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.core.Configuration;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.CertificateException;

## ssltest.py
#!/usr/bin/python

# Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford (jspenguin@jspenguin.org)
# The author disclaims copyright to this source code.

import sys
import struct
import socket
import time
import select

## PerformanceRelated.md

      
              1 file
            
          
              14 forks
            
          
                1 comment
              
            
              48 stars
            
          
                neomatrix369
                / PerformanceRelated.md
            
            
              Last active
              November 3, 2023 20:27
            
              
                Interesting links in the areas of HPC, low latency, mechanical harmony/sympathy, garbage collection
              
          
    Everything I Ever Learned About JVM Performance Tuning @Twitter- by Attila Szegedi

http://www.infoq.com/presentations/JVM-Performance-Tuning-twitter (video & slides)
9 Fallacies of Java Performance - by Ben Evans

http://www.infoq.com/articles/9_Fallacies_Java_Performance (video & slides)
Visualizing Java GC - by Ben Evans

http://www.infoq.com/presentations/Visualizing-Java-GC (video & slides)
Java Garbage Collection Distilled by Martin Thompson


## find with grep
find . -type f -name 'some-file.xml' -print0 | xargs -0 grep -niH 'something'

## proc_net_tcp_decode
Decoding the data in /proc/net/tcp:

Linux 5.x  /proc/net/tcp
Linux 6.x  /proc/PID/net/tcp

Given a socket:

$ ls -l  /proc/24784/fd/11
lrwx------ 1 jkstill dba 64 Dec  4 16:22 /proc/24784/fd/11 -> socket:[15907701]

## multiple_ssh_setting.md

      
              1 file
            
          
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              3860 stars
            
          
                jexchan
                / multiple_ssh_setting.md
            
            
              Created
              April 10, 2012 15:00
            
              
                Multiple SSH keys for different github accounts
              
          
    Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
	package main

	import (
	"context"
	"flag"
	"fmt"
	"io"
	"net"
	"net/http"
	"os"
	package com.example.jersey;

	import javax.net.ssl.*;
	import javax.ws.rs.client.Client;
	import javax.ws.rs.client.ClientBuilder;
	import javax.ws.rs.core.Configuration;
	import java.security.KeyManagementException;
	import java.security.NoSuchAlgorithmException;
	import java.security.SecureRandom;
	import java.security.cert.CertificateException;
	#!/usr/bin/python

	# Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford (jspenguin@jspenguin.org)
	# The author disclaims copyright to this source code.

	import sys
	import struct
	import socket
	import time
	import select
	Decoding the data in /proc/net/tcp:

	Linux 5.x /proc/net/tcp
	Linux 6.x /proc/PID/net/tcp

	Given a socket:

	$ ls -l /proc/24784/fd/11
	lrwx------ 1 jkstill dba 64 Dec 4 16:22 /proc/24784/fd/11 -> socket:[15907701]