diffutils包
[root@-monitor ~]# rpm -qf /usr/bin/diff
diffutils-2.8.-.el6.x86_64
[root@-monitor ~]# rpm -ql diffutils
/usr/bin/cmp
/usr/bin/diff
/usr/bin/diff3
/usr/bin/sdiff http://blog.chinaunix.net/uid-26000296-id-3507646.html
mingetty包
mingetty包 getty是Unix类操作系统启动时必须的三个步骤之一，用来开启终端，进行终端的初始化。
目前一般常用的getty程序有如下几种：
1.agetty（有时直接称为getty）：容易设置，无须配置文件。适用于直接连接的终端；
2.getty（getty_ps的一部分）：适用于直接连接的终端；
3.mgetty：最适合于通过modem连接，也可用于直连；
4.uugetty：仅用于通过modem连接终端，是getty_ps软件包的部分；
5.mingetty：简单的getty。适用于控制台终端或虚拟终端；
6.fbgetty：适用于控制台或虚拟终端。 修改/etc/issue中的内容，控制台登录显示不同的信息
#man mingetty
mingetty recognizes the following escapes sequences which might be embedded in the /etc/issue file:
CentOS release 6.5 (Final)
Kernel \r on an \m
\m inserts machine architecture (uname -m),
\r inserts operating system release (uname -r), [root@localhost ~]# rpm -ql mingetty
/sbin/mingetty
/usr/share/doc/mingetty-1.08
/usr/share/doc/mingetty-1.08/COPYING
/usr/share/man/man8/mingetty.8.gz
centos-release包
centos-release包 [root@localhost ~]# rpm -qf /etc/issue
centos-release-6-5.el6.centos.11.1.x86_64
[root@localhost ~]# rpm -ql centos-release
/etc/centos-release
/etc/issue
/etc/issue.net
/etc/pki/rpm-gpg
/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-6
/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Security-6
/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Testing-6
/etc/redhat-release
/etc/rpm/macros.dist
/etc/system-release
/etc/system-release-cpe
/etc/yum.repos.d/CentOS-Base.repo
/etc/yum.repos.d/CentOS-Debuginfo.repo
/etc/yum.repos.d/CentOS-Media.repo
/etc/yum.repos.d/CentOS-Vault.repo
/usr/share/doc/centos-release-6
/usr/share/doc/centos-release-6/EULA
/usr/share/doc/centos-release-6/GPL
/usr/share/doc/redhat-release
bridge-utils包，openvswitch包（不自带）
http://openvswitch.org/ [root@localhost ~]# rpm -qa|grep brid
bridge-utils-1.2-10.el6.x86_64
[root@localhost ~]# rpm -ql bridge-utils
/usr/sbin/brctl
/usr/share/doc/bridge-utils-1.2
/usr/share/doc/bridge-utils-1.2/AUTHORS
/usr/share/doc/bridge-utils-1.2/COPYING
/usr/share/doc/bridge-utils-1.2/FAQ
/usr/share/doc/bridge-utils-1.2/HOWTO
/usr/share/man/man8/brctl.8.gz