functions

function md() {
  mkdir -p '$@' && cd '$@'
}

function search() {
  find . -name '$1'
}

replace() {
  find . -name '$1' -type f -exec sed -i 's/$2/$3/g' {} \;
}

open-tunnel() {
  ssh -g -R 2222:localhost:22 $1
}

enter-tunnel() {
  ssh -t $1 'ssh -p 2222 $2@localhost'
}

tmux-new() {
  name=${1-tmux}
  dir=${2-~}
  tmux new-session -d -c "$dir" -s "$name"
  tmux new-window -t "$name:2" -c "$dir"
  tmux new-window -t "$name:3" -c "$dir"
  tmux select-window -t "$name:1"
  tmux switch-client -t "$name"
}

reset-dns() {
  sudo networksetup -listallnetworkservices | grep -v "An asterisk" | while read service
  do
    sudo networksetup -setdnsservers $service 1.1.1.1
    sudo networksetup -setsearchdomains $service lan
  done
  sudo dscacheutil -flushcache
  sudo killall -HUP mDNSResponder
}

reset-wifi() {
  sudo networksetup -removepreferredwirelessnetwork en0 "$1"
  sudo networksetup -setairportpower en0 off
  sudo networksetup -setairportpower en0 on
  sudo networksetup -setairportnetwork en0 "$1"
}

set-wifi-macaddress() {
  random_address=$(openssl rand -hex 6 | sed 's/\(..\)/\1:/g; s/.$//')
  address=${1-$random_address}
  sudo ifconfig en0 ether $address
  sudo networksetup -setairportpower en0 off
  sudo networksetup -setairportpower en0 on
}

update-hosts() {
  sudo 'cp' -f /etc/hosts /etc/hosts_bck
  wget "https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts" -O- > /tmp/etc_hosts
  cat ~/.hosts >> /tmp/etc_hosts
  sudo 'mv' -f /tmp/etc_hosts /etc/hosts_blocking
}

enable-hosts-blocking() {
  sudo 'cp' -f /etc/hosts_blocking /etc/hosts
  sudo dscacheutil -flushcache
}

disable-hosts-blocking() {
  sudo 'cp' -f ~/.hosts /etc/hosts
  sudo dscacheutil -flushcache
}