yum带有历史记录功能，可以查看过往的事务，重做或回滚这些事务
最重要的是可以连带依赖一并删除
yum history
root@localhost ~]# yum history
- 已加载插件：fastestmirror
- ID | 登录用户 | 日期和时间 | 操作 | 变更数
- -------------------------------------------------------------------------------
- 3 | root <root> | 2018-08-17 00:02 | Install | 30
- 2 | root <root> | 2018-08-17 00:01 | Install | 4
- 1 | 系统 <空> | 2018-08-17 07:39 | Install | 299
- history list
=============================================================================
在历史中搜索某个软件包是
yum history list Name/ ID
- [root@localhost ~]# yum history list nxlog-ce
- 已加载插件：fastestmirror
- ID | 命令行 | 日期和时间 | 操作 | 变更数
- -------------------------------------------------------------------------------
- 3 | localinstall nxlog-ce-2. | 2018-08-17 00:02 | Install | 30
- history list
- [root@localhost ~]# yum history list 5
- 已加载插件：fastestmirror
- ID | 命令行 | 日期和时间 | 操作 | 变更数
- -------------------------------------------------------------------------------
- 5 | install vim | 2018-08-17 00:43 | Install | 31
=============================================================================
回滚是
yum history undo ID
- [root@localhost ~]# yum history undo 5
- 已加载插件：fastestmirror
- Undoing transaction 5, from Fri Aug 17 00:43:45 2018
- *
- *
- *
- 事务概要
- ===========================================================================================
- 移除 31 软件包
- 安装大小：60 M
- 是否继续？[y/N]：y
- Downloading packages:
- Running transaction check
- Running transaction test
- Transaction test succeeded
- Running transaction
- *
- *
- *
- 删除:
- gpm-libs.x86_64 0:1.20.7-5.el7 perl.x86_64 4:5.16.3-292.el7 perl-Carp.noarch 0:1.26-244.el7
- perl-Encode.x86_64 0:2.51-7.el7 perl-Exporter.noarch 0:5.68-3.el7 perl-File-Path.noarch 0:2.09-2.el7
- perl-File-Temp.noarch 0:0.23.01-3.el7 perl-Filter.x86_64 0:1.49-3.el7 perl-Getopt-Long.noarch 0:2.40-3.el7
- perl-HTTP-Tiny.noarch 0:0.033-3.el7 perl-PathTools.x86_64 0:3.40-5.el7 perl-Pod-Escapes.noarch 1:1.04-292.el7
- perl-Pod-Perldoc.noarch 0:3.20-4.el7 perl-Pod-Simple.noarch 1:3.28-4.el7 perl-Pod-Usage.noarch 0:1.63-3.el7
- perl-Scalar-List-Utils.x86_64 0:1.27-248.el7 perl-Socket.x86_64 0:2.010-4.el7 perl-Storable.x86_64 0:2.45-3.el7
- perl-Text-ParseWords.noarch 0:3.29-4.el7 perl-Time-HiRes.x86_64 4:1.9725-3.el7 perl-Time-Local.noarch 0:1.2300-2.el7
- perl-constant.noarch 0:1.27-2.el7 perl-libs.x86_64 4:5.16.3-292.el7 perl-macros.x86_64 4:5.16.3-292.el7
- perl-parent.noarch 1:0.225-244.el7 perl-podlators.noarch 0:2.5.1-3.el7 perl-threads.x86_64 0:1.87-4.el7
- perl-threads-shared.x86_64 0:1.43-6.el7 vim-common.x86_64 2:7.4.160-4.el7 vim-enhanced.x86_64 2:7.4.160-4.el7
- vim-filesystem.x86_64 2:7.4.160-4.el7
- 完毕！