Bash scripts for restarting wifi when it fails.

auto.sh

#!/bin/bash
recent_restart=1

while true; do
	printf $(date +"%Y-%m-%d")
	printf " "
	printf $(date +"%H:%M:%S")
	printf " "
	if [[ $(ping -c 1 google.com) ]] > /dev/null 2>&1 ; then
		if [ $recent_restart -eq 0 ] ;
		then
			printf "\n"
		fi
		recent_restart=1
		printf "Internet last up"
	else
		if [ $recent_restart -eq 1 ]
		then
			printf "\n"
			bash restart.sh
			printf "\n"
			# echo "Would have restarted wifi"
			recent_restart=0
		fi
		printf "Internet last down"
	fi
	printf "\r"
	sleep 1
done

check.sh

#!/bin/bash
recent_restart=1

while true; do
	printf $(date +"%Y-%m-%d")
	printf " "
	printf $(date +"%H:%M:%S")
	printf " "
	if [[ $(ping -c 1 google.com) ]] > /dev/null 2>&1 ; then
		if [ $recent_restart -eq 0 ] ;
		then
			printf "\n"
		fi
		recent_restart=1
		printf "Internet last up"
	else
		if [ $recent_restart -eq 1 ]
		then
			printf "\n"
			bash restart.sh
			printf "\n"
			# echo "Would have restarted wifi"
			recent_restart=0
		fi
		printf "Internet last down"
	fi
	printf "\r"
	sleep 1
done

#!/bin/bash

# Check for internet connection.
if [[ $(ping -c 1 google.com) = "ping: cannot resolve google.com: Unknown host" ]]
then
    echo "Internet is down"
else
    echo "Internet is up"
fi

#!/bin/bash

# get current wifi device
CURRENT_DEVICE=$(networksetup -listallhardwareports | awk '$3=="Wi-Fi" {getline; print $2}')
echo "Current Wi-Fi Device = '$CURRENT_DEVICE'"

# turn off wifi
networksetup -setairportpower $CURRENT_DEVICE off

#!/bin/bash

# get current wifi device
CURRENT_DEVICE=$(networksetup -listallhardwareports | awk '$3=="Wi-Fi" {getline; print $2}')
echo "Current Wi-Fi Device = '$CURRENT_DEVICE'"

# turn on wifi
networksetup -setairportpower $CURRENT_DEVICE on

#!/bin/bash

# get current wifi device
CURRENT_DEVICE=$(networksetup -listallhardwareports | awk '$3=="Wi-Fi" {getline; print $2}')
echo "Current Wi-Fi Device = '$CURRENT_DEVICE'"

echo "Switching off wifi."

# turn off wifi
networksetup -setairportpower $CURRENT_DEVICE off

echo "Switching on wifi."

# turn on wifi
networksetup -setairportpower $CURRENT_DEVICE on
#!/bin/bash

# Check for internet connection.
if [[ $(ping -c 1 google.com) = "ping: cannot resolve google.com: Unknown host" ]]
then
    echo "Internet is down"
else
    echo "Internet is up"
fi

off.sh

#!/bin/bash

# get current wifi device
CURRENT_DEVICE=$(networksetup -listallhardwareports | awk '$3=="Wi-Fi" {getline; print $2}')
echo "Current Wi-Fi Device = '$CURRENT_DEVICE'"

# turn off wifi
networksetup -setairportpower $CURRENT_DEVICE off

on.sh

#!/bin/bash

# get current wifi device
CURRENT_DEVICE=$(networksetup -listallhardwareports | awk '$3=="Wi-Fi" {getline; print $2}')
echo "Current Wi-Fi Device = '$CURRENT_DEVICE'"

# turn on wifi
networksetup -setairportpower $CURRENT_DEVICE on

restart.sh

#!/bin/bash

# get current wifi device
CURRENT_DEVICE=$(networksetup -listallhardwareports | awk '$3=="Wi-Fi" {getline; print $2}')
echo "Current Wi-Fi Device = '$CURRENT_DEVICE'"

echo "Switching off wifi."

# turn off wifi
networksetup -setairportpower $CURRENT_DEVICE off

echo "Switching on wifi."

# turn on wifi
networksetup -setairportpower $CURRENT_DEVICE on