drush安装后出现错误提示解决办法

[vagrant@localhost lib]$ drush
Drush needs to download a library from                               [error] http://download.pear.php.net/package/Console_Table-1.1.3.tgz in order
to function, and the attempt to download this file automatically
failed because you do not have permission to write to the library
directory /usr/local/bin/drush/lib. To continue you will need to
manually download the package from http://download.pear.php.net/package/Console_Table-1.1.3.tgz, extract
it, and copy the directory into your /usr/local/bin/drush/lib
directory.

安装drush后初次输入命令：drush出现以上错误，解决办法需要下载一个库放到主目录下 usr/local/bin/drush/lib/下边。首先切换到主目录

cd /

然后进入相关目录
cd usr/local/bin/drush/lib

然后下载需要的库压缩包是.tgz格式的需要先解压这个格式
sudo wget http://download.pear.php.net/package/Console_Table-1.1.3.tgz
然后输入ls查看是否下载完毕，解压该文件。
sudo gunzip Console_Table-1.1.3.tgz


解压出来是.tar的包，然后再次解压
sudo tar -xvf Console_Table-1.1.3.tar

使用ls查看是否解压出来Console_Table-1.1.3 文件夹。
然后输入命令：drush，出现帮助文字就好了。

Console_Table-1.1.3 

Console_Table-1.1.3