1、CentOS系统
CentOS 6.x 32位

rpm -ivh http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm yum install -y python-pip 

CentOS 6.x 64位

rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm yum install -y python-pip 

CentOS 7.x

yum install epel-release yum install -y python-pip 

2、Debian/Ubuntu系统

apt-get update apt-get install python-pip