linux安装composer

[root@ianyun bin]# wget https://getcomposer.org/download/1.0.0-alpha8/composer.phar
[root@ianyun bin]# mv composer.phar /usr/local/bin/composer
[root@ianyun bin]# chmod +x /usr/local/bin/composer
[root@ianyun bin]# composer config -g repo.packagist composer https://packagist.phpcomposer.com #切换到国内源
[root@ianyun bin]# composer #输入此命令，出现下图安装成功

出现下图，说明composer包被损坏