#!/bin/bash
# curl  -s http://internal.up-gram.com/shell/install-py3.sh|bash


if [ -f /usr/bin/python3 ];then
    echo "检测到python3已安装"

else
yum install make gcc  openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel python-devel -y
wget -c  http://internal.up-gram.com/linux/Python-3.9.5.tar.xz
tar xf Python*xz
cd Python-3.9.5
./configure --prefix=/usr/local
make && make  altinstall
# altinstall在安装时会区分已存在的版本

rm /usr/bin/python3.9 /usr/bin/python3 -f
ln -s /usr/local/bin/python3.9 /usr/bin/
ln -s /usr/local/bin/python3.9 /usr/bin/python3
cd ..
fi