首先，这是我第一次设置RHEL机器，我更习惯于Debian。
我们同时安装多台机器。我们已经从 RHEL 6.3 升级到 RHEL 6.6，我们现在正在尝试安装 openmotif22（几天后会出现的 IBM 安装程序需要）。
在第一台机器上，一切正常，我们没有问题，但是在第二台机器上，这两个包出现了这个错误，我不知道它是从哪里来的。
root@mymachine:~# yum install -y openmotif22.i686 openmotif22.x86_64 --verbose
Loading "rhnplugin" plugin
Loading "product-id" plugin
Loading "security" plugin
Loading "subscription-manager" plugin
Updating Subscription Management repositories.
Unable to read consumer identity
Config time: 0.260
This system is receiving updates from RHN Classic or RHN Satellite.
Looking for repo options for [main]
Looking for repo options for [rhel-x86_64-server-6]
Repo 'rhel-x86_64-server-6' setting option 'enabled' = '1'
Repo 'rhel-x86_64-server-6' setting option 'gpgcheck' = '1'
Yum …我正在更新一台以前有点废弃的机器，需要对其软件包进行大量更新。该机器是 Ubuntu，在进行 apt 更新/升级后，出现以下错误：
carpette@carpette:~$ sudo apt clean
carpette@carpette:~$ sudo apt autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
libpam-systemd : Depends: systemd (= 232-19)
plymouth : Depends: systemd (>= 232-8~)
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
carpette@carpette:~$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state …