proxy_check.sh

#!/bin/bash
if [ -e "$HOME/.bashrc" ]; then
	a=$(grep -i proxy $HOME/.bashrc | wc -l)
	if [ a -eq 0 ]; then
		echo ".bashrc is not using proxy."
	else
		echo "For ~/.bashrc..."
		grep -i proxy $HOME/.bashrc
	fi
else
	echo ".bashrc does not exist."
fi

echo 

if [ -e "/etc/environment" ]; then
	a=$(grep -i proxy /etc/environment | wc -l)
	if [ a -eq 0 ]; then
		echo "/etc/environment is not using proxy."
	else
		echo "For /etc/environment"
		grep -i proxy /etc/environment
	fi
else
	echo "/etc/environment does not exist."
fi

echo

if [ -e "$HOME/.bash_profile" ]; then
	a=$(grep -i proxy $HOME/.bash_profile | wc -l)
	if [ a -eq 0 ]; then
		echo ".bash_profile is not using proxy."
	else
		echo "For ~/.bash_profile..."
		grep -i proxy $HOME/.bash_profile
	fi
else
	echo ".bash_profile does not exist."
fi

echo

if [ -e "/etc/apt/apt.conf" ]; then
	echo "This is apt.conf ..."
	cat "/etc/apt/apt.conf"
else
	echo "apt is not using proxy."
fi

echo

gsettingsavailable="$(which gsettings)"
if [ $gsettingsavailable != '' ]; then
	mode=$(gsettings get org.gnome.system.proxy mode)
	if [ $mode == "'none'" ]; then
		echo "The desktop environment is not using any proxy settings."
		echo "Thus, gsettings configurations are ineffective."
	elif [ $mode == "'manual'" ]; then
		echo "The desktop environment is using manual proxy settings."
		echo "Thus, following gsettings configurations are effective."
		gsettings list-recursively org.gnome.system.proxy
	else
		echo "We cannot determine the type of settings. Sorry :("
	fi
fi

echo

npmavailable="$(which npm)"
if [ $npmavailable != '' ]; then
	echo -n "npm http proxy:  " 
	npm config get proxy
	echo -n "npm https proxy:  "
	npm config get https-proxy
fi