系統因爲精簡安裝或者缺少軟件安裝的解決方法：
配置yum :
使用yum安裝gcc ; yum install gcc --nogpgcheck -y
對於缺少的系統組件 要使用yum groupinstall "組件名稱" --nogpgcheck -y
使用yum grouplist可以查看可安裝的系統組件名稱；
Centos精簡安裝無setup或者crontab :
使用yum 查找；然後安裝
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[root@topic ~]# yum whatprovides /usr/bin/crontab
Loaded plugins: rhnplugin, security
This system is not registered with RHN.
RHN support will be disabled.
4:vixie-cron-4.1-81.el5.i386 : The Vixie cron daemon for executing specified programs at set times.
Repo : base
Matched from:
Filename : /usr/bin/crontab
4:vixie-cron-4.1-77.el5_4.1.i386 : The Vixie cron daemon for executing specified programs at set times.
Repo : installed
Matched from:
Other : Provides-match: /usr/bin/crontab
[root@topic ~]# yum install vixie-cron -y
Loaded plugins: rhnplugin, security
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package vixie-cron.i386 4:4.1-81.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
======================================================================================================================================
Package Arch Version Repository Size
======================================================================================================================================
Updating:
vixie-cron i386 4:4.1-81.el5 base 81 k
Transaction Summary
======================================================================================================================================
Install 0 Package(s)
Upgrade 1 Package(s)
Total download size: 81 k
Downloading Packages:
vixie-cron-4.1-81.el5.i386.rpm | 81 kB 00:09
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897
Public key for vixie-cron-4.1-81.el5.i386.rpm is not installedsetup的安裝方法是一樣的，先用whatprovides查找到安裝名稱；然後再用yum install 包名 安裝即可 ！！