Shulou(Shulou.com)06/03 Report--

This article mainly explains "how to write a Shell script to upgrade CentOS 6.x system Python to version 2.7". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to write a Shell script to upgrade CentOS 6.x system Python to version 2.7".

On CentOS 6.x, the default built-in Python is version 2.6.x, which is a bit old, such as "collections.OrderedDict" is 2.7, and the new version of the famous Python Web framework Django (e.g. 1.7) does not support Python2.6, with a minimum requirement of 2.7. Some companies or shared cloud servers use CentOS6.x, so there is a need to upgrade Python to 2.7.

Before upgrading Python, you need to install some tools and software libraries, otherwise you may make errors when installing Python or pip later.

Python2.7 is installed through source code, and the python feasible executor is installed in / usr/local/bin/, by default in $PATH, and / usr/local/bin is preferred (if not, you need to set the PATH environment variable yourself).

After installing python, you also need to install easy_install and pip, the two most commonly used tools.

The code is as follows:

#! / bin/bash

# a script to install python 2.7 on CentOS 6.x system.

# CentOS 6.x has python 2.6 by default, while some software (e.g. Django1.7)

# need python 2.7.

# install some necessary tools & libs

Echo "install some necessary tools & libs"

Yum groupinstall "Development tools"

Yum install openssl-devel zlib-devel ncurses-devel bzip2-devel readline-devel

Yum install libtool-ltdl-devel sqlite-devel tk-devel tcl-devel

Sleep 5

# download and install python

Version='2.7.8'

Python_url= "https://www.python.org/ftp/python/$version/Python-${version}.tgz"

# check current python version

Echo "before installation, your python version is: $(python-V & 2 > 1)"

Python-V 2 > & 1 | grep "$version"

If [$?-eq 0]; then

Echo "current version is the same as this installation."

Echo "Quit as no need to install."

Exit 0

Fi

Echo "download/build/install your python"

Cd / tmp

Wget $python_url

Tar-zxf Python-$ {version} .tgz

Cd Python-$ {version}

. / configure

Make-j 4

Make install

Sleep 5

Echo "check your installed python"

Python-V 2 > & 1 | grep "$version"

If [$?-ne 0]; then

Echo "python-V is not your installed version"

/ usr/local/bin/python-V 2 > & 1 | grep "$version"

If [$?-ne 0]; then

Echo "installation failed. Use'/ usr/local/bin/python-V'to have a check"

Fi

Exit 1

Fi

Sleep 5

# install setuptools

Echo "install setuptools"

Wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py

Python ez_setup.py

# check easy_install version

Easy_install-version

Sleep 5

# install pip for the new python

Echo "install pip for the new python"

Easy_install pip

# check pip version

Pip-V

Echo "Finished. Well done!"

Echo "If 'python-V' still shows the old version, you may need to re-login."

Echo "And/or set / usr/local/bin in the front of your PATH environment variable."

Echo "-"

Thank you for your reading, the above is "how to write Shell script to achieve CentOS 6.x system upgrade Python to version 2.7" content, after the study of this article, I believe you on how to write Shell script to achieve CentOS 6.x system upgrade Python to 2.7 version of this problem has a deeper understanding, the specific use of the need for you to practice verification. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.