diff --git a/src/init.sh b/src/init.sh
index 34a38ab..ec5afcc 100644
--- a/src/init.sh
+++ b/src/init.sh
@@ -1,3 +1,87 @@
+_black() { echo -e "$(tput setaf 0)$*$(tput setaf 9)"; }
+_red() { echo -e "$(tput setaf 1)$*$(tput setaf 9)"; }
+_green() { echo -e "$(tput setaf 2)$*$(tput setaf 9)"; }
+_yellow() { echo -e "$(tput setaf 3)$*$(tput setaf 9)"; }
+_blue() { echo -e "$(tput setaf 4)$*$(tput setaf 9)"; }
+_magenta() { echo -e "$(tput setaf 5)$*$(tput setaf 9)"; }
+_cyan() { echo -e "$(tput setaf 6)$*$(tput setaf 9)"; }
+_white() { echo -e "$(tput setaf 7)$*$(tput setaf 9)"; }
+log () {
+  local TMPDIR="/tmp/"
+  local LOG="${TMPDIR}/233script.log"
+  local TYPE=$1
+  local MSG=$2
+  local TIME=$(date +%Y-%m-%d\ %H:%M:%S)
+
+  [[ ! -d $TMPDIR ]] && mkdir -p $TMPDIR
+  if [[ -z $TERM ]]; then #if in cron
+    echo "[$TIME] $MSG" >> $LOG
+  else
+    case "$TYPE" in
+          info)
+            _green "[$TIME] $MSG" ;;
+          warn)
+            _yellow "[$TIME] $MSG" ;;
+          err)
+            _red "[$TIME] $MSG" ;;
+    esac
+    echo "[$TIME] $MSG" >> $LOG
+  fi
+}
+
+error () { log err "$1"; }
+info () { log info "$1"; }
+warn () { log warn "$1";}
+disableselinux () {
+  # Configure SELinux
+  type selinuxenabled >/dev/null 2>&1 || return 0;
+  [[ ! -f /etc/selinux/config ]] && return 0;
+  if selinuxenabled; then
+    info "disabling SELINUX ..."
+    setenforce Permissive # disable selinux needs reboot, set to Permissive
+    sed -i 's/^SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
+  fi
+}
+
+addtocron () {
+  local PROG="$1"
+  local CRONLINE="$2"
+
+  # empty crontab
+  if ! crontab -l >/dev/null 2>&1; then
+    echo "$CRONLINE" | crontab
+    info "> crontab empty, added: $CRONLINE"
+  else
+    # add if $PROG not exists
+    if ! crontab -l | grep -q "$PROG";  then
+      info "> added: $CRONLINE"
+      (crontab -l; echo "$CRONLINE") | crontab
+    else
+      info "> $PROG exists in cron, skipping."
+    fi
+  fi
+}
+
+removefromcron () {
+  local PROG="$1"
+  if crontab -l | grep -q "$PROG";  then
+    crontab -l | grep -v "$PROG" | crontab
+  fi
+}
+
+disablecronmail() {
+  if [[ ! -f /etc/sysconfig/crond ]]; then
+	return 0
+  fi
+  sed -i '/^CRONDARGS/d' /etc/sysconfig/crond
+  if crond -h 2>&1 | grep -- '-s'; then
+    sed -i '$aCRONDARGS="-s -m off"' /etc/sysconfig/crond
+  else
+    sed -i '$aCRONDARGS="-m off"' /etc/sysconfig/crond
+  fi
+  service crond restart
+}
+
 _rm() {
 	rm -rf "$@"
 }
@@ -17,15 +101,21 @@ _load() {
 }
 
 get_ip() {
-	ip=$(curl -s https://ipinfo.io/ip)
-	[[ -z $ip ]] && ip=$(curl -s https://api.ip.sb/ip)
-	[[ -z $ip ]] && ip=$(curl -s https://api.ipify.org)
-	[[ -z $ip ]] && ip=$(curl -s https://ip.seeip.org)
-	[[ -z $ip ]] && ip=$(curl -s https://ifconfig.co/ip)
-	[[ -z $ip ]] && ip=$(curl -s https://api.myip.com | grep -oE "([0-9]{1,3}\.){3}[0-9]{1,3}")
-	[[ -z $ip ]] && ip=$(curl -s icanhazip.com)
-	[[ -z $ip ]] && ip=$(curl -s myip.ipip.net | grep -oE "([0-9]{1,3}\.){3}[0-9]{1,3}")
+	ip=$(curl -4 -s https://ipinfo.io/ip)
+	[[ -z $ip ]] && ip=$(curl -4 -s https://api.ip.sb/ip)
+	[[ -z $ip ]] && ip=$(curl -4 -s https://api.ipify.org)
+	[[ -z $ip ]] && ip=$(curl -4 -s https://ip.seeip.org)
+	[[ -z $ip ]] && ip=$(curl -4 -s https://ifconfig.co/ip)
+	[[ -z $ip ]] && ip=$(curl -4 -s https://api.myip.com | grep -oE "([0-9]{1,3}\.){3}[0-9]{1,3}")
+	[[ -z $ip ]] && ip=$(curl -4 -s icanhazip.com)
+	[[ -z $ip ]] && ip=$(curl -4 -s myip.ipip.net | grep -oE "([0-9]{1,3}\.){3}[0-9]{1,3}")
 	[[ -z $ip ]] && echo -e "\n$red 这垃圾小鸡扔了吧！$none\n" && exit
+
+	v6ip=$(curl -6 -s https://ifconfig.co/ip)
+	[[ -z $v6ip ]] && v6ip=$(curl -6 -s https://api.ip.sb/ip)
+	[[ -z $v6ip ]] && v6ip=$(curl -6 -s https://ip.seeip.org)
+	[[ -z $v6ip ]] && v6ip=$(curl -6 -s http://icanhazip.com)
+	[[ -z $v6ip ]] && v6ip=$(curl -6 -s https://api.myip.com | cut -d\" -f4)
 }
 
 error() {