pip 是“A tool for installing and managing Python packages.”，也就是说pip是python的软件安装工具
2、下面介绍怎么在linux下安装pip
下载pip到/usr/local/src
**cd /usr/local/src**wget "https://pypi.python.org/packages/source/p/pip/pip-1.5.4.tar.gz#md5=834b2904f92d46aaa333267fb1c922bb" --no-check-certificate如果提示：-bash: wget: command not found
那么安装wget，执行如下：
# yum -y install wget 解夺安装pip
tar -xzvf pip-1.5.4.tar.gz
cd pip-1.5.4
python setup.py install如果安装报下面的错：
Traceback (most recent call last):
File "setup.py", line 6, in <module>
from setuptools import setup, find_packages
ImportError: No module named setuptools那么就要先安装setuptools包
(1)下载setuptools包
wget http://pypi.python.org/packages/source/s/setuptools/setuptools-2.0.tar.gz(2)解压setuptools包
tar zxvf setuptools-2.0.tar.gz
cd setuptools-2.0(3)编译setuptools
python setup.py build(4)开始执行setuptools安装
python setup.py install安装完成setuptools包后，在重新执行：
cd /usr/local/src/pip-1.5.4
python setup.py install至此pip安装完成
3、linux下pip使用参数
# pip --help
Usage:
pip <command> [options]
Commands:
install Install packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
search Search PyPI for packages.
wheel Build wheels from your requirements.
zip DEPRECATED. Zip individual packages.
unzip DEPRECATED. Unzip individual packages.
bundle DEPRECATED. Create pybundles.
help Show help for commands.
General Options:
-h, --help Show help.
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
-V, --version Show version and exit.
-q, --quiet Give less output.
--log-file <path> Path to a verbose non-appending log, that only logs failures. This log is active by default at /root/.pip/pip.log.
--log <path> Path to a verbose appending log. This log is inactive by default.
--proxy <proxy> Specify a proxy in the form [user:passwd@]proxy.server:port.
--timeout <sec> Set the socket timeout (default 15 seconds).
--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup.
--cert <path> Path to alternate CA bundle.