【求助】sendmail备份问题

Question

我现在机器sendmail版本是8.11.1，想要升级到最新8.14.2，进行其他程序的测试

不过程序测试成功之后还要返回到8.11.1版本

①升级的时候只要把安装包下下来，然后编译安装是不是就行了，8.11.1还需要卸载么？

②返回到8.11.1版本的时候，需要先卸载8.14.2版本么？

③手上已经没有8.11.1版本的安装文件了，如何备份8.11.1呢？
  # cp -p /usr/lib/sendmail /usr/lib/sendmail.backup
   # cp -rp /etc/mail  /etc/mail.backup
   就这两句可以么？？

以上三个问题，麻烦大家了，知道的大侠们请指导一二，谢谢~~~~~~

[ 本帖最后由 rbhr 于 2009-6-5 16:59 编辑 ]

Answer 1

给你点提示，:wink: patch_save_files=true Options→Change Options→Save files replaced by patch
for later rollback
If set to false, patches are loaded directly to the committed state and cannot be rolled back. While a convenient
way to control disk usage, this option is not recommended unless alternative recovery mechanisms are available.
reinstall=false Options→Change Options→Reinstall filesets even if the
same revision exists
Prevents SD-UX from re-installing (overwriting) an existing revision of a fileset. If set to true, filesets will be reinstalled.