Notes & Stuff

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• 

  jess 7:56 pm on June 11, 2010 Permalink | Reply
  Tags: Bash, MacOS ( 3 ), Shell Scripts ( 3 )   

  Mac OSX 10.6 Shell Script to Configure, Launch, and Shutdown Screen Sharing 

  Apple’s MacOS has a tidy built in remote access client and service generically known as “Screen Sharing”. Yay! This works great for headless machines, testing servers, and annoying your spouse. The paranoid and performance conscious user may not want these services continuously running. Rogue services hanging out, listening, and waiting for some punk to probe them in an Internet dark alley. This cobbled together shell script might be for you!

  This shell script has four simple commands (I use sudo because I really should):

  • # sudo ./share-screen.sh start
  • # sudo ./share-screen.sh stop
  • # sudo ./share-screen.sh allow {username}
  • # sudo ./share-screen.sh deny {username}

  I use this in terminal. Make sure you put a copy of this script on the target machine and make it executable. First I make sure that Remote Login is active on the target computer. It’s under Sharing in System Preferences. Then I login remotely using ssh. I fire up the script, activate Screen Sharing, do my business, shutdown Screen Sharing, log off, and go home.

  Of course, no warranty, no guaranty. Good Luck!

  #!/bin/bash
  
  if [ $# == 0 ]; then
  	echo  "Commands: start, stop, allow <username>, deny <username>"
  	exit
  fi
  
  case "$1" in
  	start)
  		echo 'Starting Remote Access'
  		# Activate Apple Remote Access with current settings
  		sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate
  		;;
  	stop)
  		echo 'Stopping Remote Access'
  		# Deactivate Apple Remote Access
  		sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -deactivate -stop
  		;;
  	allow)
  		if [ -z "$2" ]; then
  			echo  "ERROR: Provide a valid user"
  			exit
  		fi
  		sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -allowAccessFor -specifiedUsers
  		sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -access -on -privs -all -users ${2}
  		;;
  	deny)
  		if [ -z "$2" ]; then
  			echo  "ERROR: Provide a valid user"
  			exit
  		fi  
  		sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -allowAccessFor -specifiedUsers
  		sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -access -off -privs -none -users ${2}  
  		;;  
  esac
  

  I almost forgot. Credit where credit is due! Inspiration from these articles and resources:

  http://www.macosxhints.com/article.php?story=20080318190503111

  http://rentzsch.tumblr.com/post/515009165/starting-vnc-remotely-via-kickstart

   

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• 

  jess 2:15 pm on March 25, 2010 Permalink | Reply
  Tags: Bash, Shell Scripts ( 3 ), Tommy Johnson   

  Tommy’s diggall.sh revised 

  Think you know the linux digg command? Ever try to do some simple network discovery with it? This script by Tommy Johnson does some nice condensed discovery. Just pass a domain for the argument.

  ./diggall.sh example.com

  That is all!

  #!/bin/bash
  echo "MX points to:"
  dig MX $1 +short | sort -n
  echo ""
  echo "A points to:"
  dig A $1 +short
  echo ""
  echo "www points to:"
  dig A http://www.$1 +short
  echo ""
  echo "mail points to:"
  dig A mail.$1 +short
  echo ""
  echo "SOA Nameserver declared:"
  echo `dig SOA $1 +short | awk '{print $1}'`
  echo ""
  #echo "oldmail points to:"
  #dig A oldmail.$1 +short
  domain1=( $(echo $1 | awk -F '.' '{print $1}'))
  domain2=( $(echo $1 | awk -F '.' '{print $2}'))
  domain3=( $(echo $1 | awk -F '.' '{print $3}'))
  domain2=( $(echo $domain2.$domain3 | sed 's/[:.:]$//') )
  first=( $(dig NS +short $domain2 | sed 's/[:.:]$//') )
  second=( $(dig +short NS $domain2 @$first | sed 's/[:.:]$//') )
  #echo "Authoritative nameserver for TLD is: "$second
  #echo '+===============================================+'
  echo "Name Servers as reported by registrar:"
  echo `dig NS $domain1.$domain2 @$second | grep "AUTHORITY SECTION" -A3 | grep -v AUTHORITY | awk '{print $5}'`
  echo "IPs declared by registrar:"
  echo `dig NS $domain1.$domain2 @$second | grep "ADDITIONAL SECTION" -A3 | grep -v ADDITIONAL | awk '{print $5}'`
  #echo '+===============================================+'
  echo ""
  echo "Name Servers in zone file are:"
  dig NS $1 +short
  dig NS $1 | grep "ADDITIONAL SECTION" -A3 | grep -v ADDITIONAL | awk '{print $5}'
  echo "txt record is:"
  dig txt $1 +short