#pinger.sh by Leif Messinger
#./pinger.sh [ADDRESS] to search
#./pinger.sh [ADDRESS] & to search in the background
#https://serverfault.com/a/42382
ping_cancelled=false # Keep track of whether the loop was cancelled, or succeeded
until ping -c1 "$1" >/dev/null 2>&1; do :; done & # The "&" backgrounds it
trap "kill $!; ping_cancelled=true" SIGINT
wait $! # Wait for the loop to exit, one way or another
trap - SIGINT # Remove the trap, now we're done with it
if [ "$ping_cancelled" == true ] #https://stackoverflow.com/a/21210966/10141528
then
	printf "The pinger for $1 just closed bro.\n"
else
	printf "$1 IS UP BROOO\a\n"
fi

CLIENT_VPN_ID="cvpn-endpoint-xxxxxxxxxxxx"

for region in $(aws ec2 describe-regions --query "Regions[].RegionName" --output text); do
    echo "Searching in region: $region"
    aws ec2 describe-client-vpn-endpoints --region $region --query "ClientVpnEndpoints[?ClientVpnEndpointId=='$CLIENT_VPN_ID']" --output table
done

#!/bin/bash
#Takes command line arguments and pulls the header files.
#Good for checking if the function you want is in the header or not.
#cppToStdout.sh "time.h"
while [ "$1" != "" ]; do
	echo "#include<$1>" | g++ -x c++ -E -
	shift
done

for region in `aws ec2 describe-regions --output text | cut -f4`
do
     echo -e "\nListing Instances in region:'$region'..."
     aws ec2 describe-instances --query 'Reservations[*].Instances[*].{Instance:InstanceId,Subnet:SubnetId}' --region $region
done
#This script is to be used with any AWS CLI configured environment, it will list any EC2 instances and their associated subnet network ID's in JSON format

#!/bin/bash
#cpcmd.sh [file1 [file2...]]
#Prints out the commands needed to copy the file to your local machine
#This will work on any server that also has the same hostname as in your hosts file.
#I should update this to detect if a file is a directory, and enable recursion for those commands. If you do it now, it will probably just warn you.
if [ -n "$1" ]; then
        for arg; do
                recursive=$(if [[ -d $arg ]]; then printf " -r"; fi)
                printf "scp$recursive \"$(whoami)@$(hostname):"
                printf `readlink -f $arg`
                printf "\" .\n"
        done
else
		echo "scp \"$(whoami)@$(hostname):$PWD/*\" ."
fi

#-----------EDIT:
#On the UNT cell machines, you have to do this script instead
##!/bin/bash
#if [ -n "$1" ]; then
#        for arg; do
#                recursive=$(if [[ -d $arg ]]; then printf " -r"; fi)
#                printf "scp$recursive $(whoami)@$(hostname).eng.unt.edu:"
#                printf `readlink -f $arg`
#                printf " .\n"
#        done
#else
#        echo "scp $(whoami)@$(hostname).eng.unt.edu:$PWD/* ."
#fi

touch /tmp/login1.txt /tmp/login2.txt
while [ true ]
do
	who | gawk '{ print $1 }' > /tmp/login2.txt
	comm -13 /tmp/login1.txt /tmp/login2.txt
	#Just a bit easier to read
	#diff /tmp/login1.txt /tmp/login2.txt
	cat /tmp/login2.txt > /tmp/login1.txt
	sleep 1
done