connect to remote mysql

1. if there is a firewall
sudo /sbin/iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 3306 -j ACCEPT

2. in my.cnf， set
bind-address = your IP

memcached can't link to libevent.so

> ldd /usr/bin/memcached
> LD_DEBUG=libs /usr/bin/memcached -v
> sudo ln -s /usr/lib/libevent-2.0.so.5 /lib64/libevent-2.0.so.5

Install Git

install git on a plain CentOS 5.5 64bit machine：

you may not have these three libraries, so install them first.
> yum install openssl-devel.x86_64
> yum install curl-devel.x86_64
> yum install expat-devel.x86_64


now , go to your git source directory, and hit the following command,

> make
> make install

you shall now find the git commands as bellow,

/root/bin/git*