$ sudo yum install -y pcre-devel
$ sudo yum install xz-devel
$ cd /usr/local/src
$ sudo git clone https://github.com/ggreer/the_silver_searcher.git
$ cd the_silver_searcher
$ sudo ./build.sh
$ sudo make install
$ which ag
$ sudo yum install epel-release
$ sudo yum install nginx
$ sudo rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
$ sudo rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
$ sudo yum --enablerepo=remi,remi-test install redis
$ cat /etc/redis.conf
$ wget http://dev.mysql.com/get/mysql57-community-release-el6-7.noarch.rpm
$ sudo rpm -Uvh mysql57-community-release-el6-7.noarch.rpm
$ yum repolist all | grep mysql
$ sudo yum install mysql-community-server'
$ sudo grep 'temporary password' /var/log/mysqld.log
> set password = password('4xfUsGjRac*V/2bG');
> CREATE USER 'myuser'@'%' IDENTIFIED BY 'mypass';
> GRANT ALL ON *.* TO 'myuser'@'%';