[Shell] Auto Ulimit Updater

#!/bin/sh
#-------------------------------------------------
# Ulimit & iptable auto-updater, saves alot of time.
# Developed for CentOS 6/7
#------------------------
# wget http://pastebin.com/raw.php?i=hf3Gc3VP -O updater.sh
# chmod 777 updater.sh
# sh updater.sh
#--------------
echo "Updating iptables & ulimit"
read -p "Press enter to continue.."
yum install gcc -y; service iptables stop; chkconfig iptables off; ulimit -Hn 999999; ulimit -Sn 99999; echo -e 'ulimit -s 999999; ulimit -n 999999; ulimit -u 999999\n' >> ~/.bashrc; ulimit -s 999999; ulimit -n 999999; ulimit -u 999999; sysctl -w fs.file-max=999999 >/dev/null; wget -q https://pastebin.com/raw.php?i=DEuu6MzK -O /etc/security/limits.conf; wget -q https://pastebin.com/raw.php?i=1UB3u1fn -O /usr/include/bits/typesizes.h
echo "Ulimit & iptables are fully updated"
echo "Thank you for using my updater"
echo "https://pastebin.com/hf3Gc3VP"
echo "Chris Poole | codingplanets"