摘要：
使用alternatives命令完成，必须具有root权限。alternative命令介绍alternatives version 1.3.30.2 - Copyright (C) 2001 Red Hat, Inc.This may be freely redistributed under the terms of the GNU Public License.usage: alternatives --install <link> <name> <path> <priority> [--initscript <service>] 阅读全文
