保存安装的rpm到本地
方法一：
[root@ServerA ~]# vim /etc/yum.conf
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=0
#修改keepcache=1即可在yum安装时保存rpm包
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
bugtracker_url=http://bugs.centos.org/set_project.php?project_id=23&ref=http://bugs.centos.org/
bug_report_page.php?category=yum
distroverpkg=centos-release 对于centos7来说可以在通过ls /var/cache/yum/x86_64/7/查看所有下载记录
方法二（推荐）：
yum install -y 包名 -–downloadonly
下载RPM包而不安装
yum install -y 包名 -–downloadonly -–downloaddir=路径
下载到指定的目录下
yum reinstall -y 包名 -–downloadonly -–downloaddir=路径
下载已经安装过的RPM包到指定的目录下
yum卸载软件包包括依赖
适用场合：当我们安装的软件包包含较多依赖，想要完全卸载相应的软件包及依赖
- 通过
yum history list列出yum安装/卸载历史 注意ID编号
[root@ServerB ~]# yum history list
Loaded plugins: fastestmirror, langpacks
ID | Command line | Date and time | Action(s) | Altered
-------------------------------------------------------------------------------
30 | install -y samba* | 2019-12-03 18:45 | I, U | 47
29 | history undo 24 | 2019-12-03 17:39 | Install | 13
28 | history undo 27 | 2019-12-03 17:38 | Erase | 1
27 | install -y bind-utils –d | 2019-12-03 17:32 | Install | 1
26 | remove -y bind-utils | 2019-12-03 17:31 | Erase | 5 - 使用
yum history undo ID即可连通依赖进行卸载
[root@ServerB ~]#
[root@ServerB ~]# yum history undo 30
Loaded plugins: fastestmirror, langpacks
Undoing transaction 30, from Tue Dec 3 18:45:26 2019
Updated dbus-1:1.6.12-13.el7.x86_64 @anaconda
Update 1:1.10.24-13.el7_6.x86_64 @base
Updated dbus-libs-1:1.6.12-13.el7.x86_64 @anaconda
Update 1:1.10.24-13.el7_6.x86_64 @base
Updated dbus-x11-1:1.6.12-13.el7.x86_64 @anaconda
Update 1:1.10.24-13.el7_6.x86_64 @base
Updated glusterfs-3.7.1-16.el7.x86_64 @anaconda
Update 3.12.2-47.2.el7.x86_64 @base
Updated glusterfs-api-3.7.1-16.el7.x86_64 @anaconda
Update 3.12.2-47.2.el7.x86_64 @base
Updated glusterfs-client-xlators-3.7.1-16.el7.x86_64 @anaconda
Update 3.12.2-47.2.el7.x86_64 @base
Updated glusterfs-fuse-3.7.1-16.el7.x86_64 @anaconda
...
...
---> Package pyldb.x86_64 0:1.4.2-1.el7 will be erased
---> Package python-tdb.x86_64 0:1.3.16-1.el7 will be erased
---> Package python-tevent.x86_64 0:0.9.37-1.el7 will be erased
---> Package samba.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-dc.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-dc-libs.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-devel.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-krb5-printing.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-pidl.noarch 0:4.9.1-6.el7 will be erased
---> Package samba-python.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-python-test.x86_64 0:4.9.1-6.el7 will be erased
---> Package samba-test.x86_64 0:4.9.1-6.el7 will be erased
...
...
glusterfs-libs x86_64 3.7.1-16.el7 - 0.0
glusterfs-api x86_64 3.7.1-16.el7 - 0.0
samba-common noarch 4.2.3-10.el7 - 0.0
libwbclient x86_64 4.2.3-10.el7 - 0.0
samba-common-tools x86_64 4.2.3-10.el7 - 0.0
samba-libs x86_64 4.2.3-10.el7 - 0.0
Transaction Summary
===============================================================================================
Remove 22 Packages (+1 Dependent package)
Not available 25 Packages
Installed size: 33 M
Is this ok [y/N]: 键入y即可卸载