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Donny Jie kj54321

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@un33k
un33k / sed cheatsheet
Created August 22, 2011 13:28
magic of sed -- find and replace "text" in a string or a file
FILE SPACING:
# double space a file
sed G
# double space a file which already has blank lines in it. Output file
# should contain no more than one blank line between lines of text.
sed '/^$/d;G'
@adamawolf
adamawolf / Apple_mobile_device_types.txt
Last active July 29, 2026 05:29
List of Apple's mobile device codes types a.k.a. machine ids (e.g. `iPhone1,1`, `Watch1,1`, etc.) and their matching product names
i386 : iPhone Simulator
x86_64 : iPhone Simulator
arm64 : iPhone Simulator
iPhone1,1 : iPhone
iPhone1,2 : iPhone 3G
iPhone2,1 : iPhone 3GS
iPhone3,1 : iPhone 4
iPhone3,2 : iPhone 4 GSM Rev A
iPhone3,3 : iPhone 4 CDMA
iPhone4,1 : iPhone 4S
@urielka
urielka / ipin.py
Created September 3, 2012 12:37
iOS PNG uncrushers based on http://www.axelbrz.com.ar/?mod=iphone-png-images-normalizer with a fix for multiple IDAT
#---
# iPIN - iPhone PNG Images Normalizer v1.0
# Copyright (C) 2007
#
# Author:
# Axel E. Brzostowski
# http://www.axelbrz.com.ar/
# axelbrz@gmail.com
#
# References:
@hzbd
hzbd / haproxy.config
Created May 4, 2013 17:34
Sample HAProxy config with logging.
global
pidfile /var/run/haproxy.pid
log 127.0.0.1 local0 info
ulimit-n 65536
defaults
mode http
clitimeout 600000 # maximum inactivity time on the client side
srvtimeout 600000 # maximum inactivity time on the server side
@mbrownnycnyc
mbrownnycnyc / nsclient_update.sh
Created May 24, 2013 15:41
script for use with `nsupdate` to update linux client DNS on a DNS server... in this instance, I am targeting a Windows Server DNS server 2003/2008/2012+. I have manually created the PTR and A records once, and granted the Everyone ACE the "Write" permission in the DACL of the PTR and A records.
#!/bin/sh
#original from http://community.spiceworks.com/topic/262635-linux-does-not-register-on-the-windows-ad-dns
# reply of Phil6196 Oct 1, 2012 at 12:41 AM (EDT)
ADDR=`/sbin/ifconfig eth0 | grep 'inet addr' | awk '{print $2}' | sed -e s/.*://`
HOST=`hostname`
echo "update delete $HOST A" > /var/nsupdate.txt
echo "update add $HOST 86400 A $ADDR" >> /var/nsupdate.txt
echo "update delete $HOST PTR" > /var/nsupdate.txt
echo "update add $HOST 86400 PTR $ADDR" >> /var/nsupdate.txt
nsupdate /var/nsupdate.txt
@CLCL
CLCL / CentOS6-L2TP-IPsec.md
Last active April 30, 2026 03:35
L2TP/IPsec（AndroidやiPhoneからのVPN接続）を経路を用意すべくVPSにL2TP/IPsecサーバを設置するとき、ネットにある情報だとなかなかつながらないから、標準環境としてAWSのCentOS 6.3 x86_64 Release Media(ami-3fe8603e)の起動直後から最短距離で設定する方法をまとめた。

CentOS 6でとにかくL2TP/IPsecサーバ

  • AWSでEC2のインスタンスを借りる
  • 今回は東京リージョンのCentOS 6.3 x86_64 Release MediaのAIM(ami-3fe8603e)でインスタンスを建てる
  • Security Group: L2TP/IPsec（Inbound 22/TCP: SSH, 500/UDP: ISAKMP, 1701/UDP: L2TP, 4500/UDP: IPSec NAT Traversal）を許可
  • ec2-54-249-173-214.ap-northeast-1.compute.amazonaws.com（グローバルIPアドレス：54.249.173.214）にrootでログイン

SELinuxを無効にする

[root@ip-10-132-164-105 ~]# setenforce 0
@mapbutcher
mapbutcher / EnableWinRm
Created July 17, 2013 01:19
Enable WinRM with basic auth
set-executionpolicy -executionpolicy remotesigned
winrm quickconfig -q
winrm set winrm/config/winrs '@{MaxMemoryPerShellMB="512"}'
winrm set winrm/config '@{MaxTimeoutms="1800000"}'
winrm set winrm/config/service '@{AllowUnencrypted="true"}'
winrm set winrm/config/service/auth '@{Basic="true"}'
@cha55son
cha55son / dynmotd
Last active December 12, 2024 13:51
RHEL (Centos/Fedora) dynamic motd
#!/bin/bash
# Installation:
#
# 1. vim /etc/ssh/sshd_config
# PrintMotd no
#
# 2. vim /etc/pam.d/login
# # session optional pam_motd.so
#
@blt04
blt04 / ip-down
Created July 27, 2013 05:46
OSX VPN Scripts: The built in Mac VPN client doesn't have too many options but you can easily apply custom settings via scripts. Here are some examples of how to customize your VPN connections. Just put these two files in /etc/ppp and customize. Make sure you `chmod 0755 /etc/ppp/ip-up /etc/ppp/ip-down`. For more information, see `man pppd`.
#!/bin/bash
#
# /etc/ppp/ip-down
#
# When the ppp link goes down, this script is called with the following
# parameters
# $1 the interface name used by pppd (e.g. ppp3)
# $2 the tty device name
# $3 the tty device speed
# $4 the local IP address for the interface
@plentz
plentz / nginx.conf
Last active July 23, 2026 11:59
Best nginx configuration for improved security(and performance)
# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048