1. According to experience, the principle of minimization should be used when selecting the installation package, that is, it is not installed if it is not needed or if it is not sure whether it is needed, so as to ensure the system safety to the greatest extent.
2. If some package groups are dropped during the installation process or other partners did not select it during installation, after installation, you can fill in the package groups that were not installed at the time of installation as follows:
yum groupinstall "Compatibility libraries" "Base" "Development tools"
yum groupinstall "debugging Tools" "Dial-up Networking Support"
You can view the specific installed components through the yum groupinfo package group.
3. Check the package selection when logging into the system after installing 6.5:
yum grouplist:
Installed Groups:
Base
Compatibility libraries
Debugging Tools
Development tools
E-mail server
Graphical Administration Tools
Hardware monitoring utilities
Legacy UNIX compatibility
Networking Tools
Performance Tools
Perl Support
Scientific support
Security Tools
* You can see that in addition to our choice, the system still installs some additional package groups by default.
Note: Don't use yum 's delete function to delete the software, it will delete related dependencies and cause unexpected problems.
( 2 ) Commands for installing system reinstallation tools
After installing the system, there will be some basic tools not installed, then you can install it according to the needs of yum, when you can use any fashion. For example:
yum install tree nmap sysstat lrzsz dos2unix -y
If you need to update the patch, execute
yum update