System installation type selection and custom extra package group
Enter the interface as shown in Figure 2-28. The first half is the selection of different system installation types for system customization, and the default is “desktop”. Here we choose “minimal”, that is, to minimize the installation. The second half is the selection of additional package groups to be added after the above system installation types are determined. We choose “Customize now”, that is, to customize immediately.
Figure 2-28 system installation package type selection and custom extra package group
In the user-defined additional package groups interface in Figure 2-29, we need to select the large classification on the left, and then check the corresponding small package groups on the right. Note: the content in the right small bag group is OK by default. The selection results are shown in Figure 2-29 and figure 2-30
Figure 2-30 user defined installation package group selection interface 2
Tips for the old boy:
1. According to experience, when selecting the installation package, the principle of minimization should be followed, that is, do not install what is not needed or not sure whether it is needed, so as to ensure the system security to the greatest extent.
2. If some package groups or other partners are not selected during the installation process, the package groups not installed during the installation can be supplemented as follows after the installation:
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 in the system after installing 6.5:
Graphical Administration Tools
Hardware monitoring utilities
Legacy UNIX compatibility
*You can see that in addition to what we selected, the system still has some additional package groups installed by default.
Note: do not use the delete function of Yum to delete the software, which will delete related dependencies and cause unexpected problems.
(2) command of installation system replacement tool
After installing the system, there will be some basic tools that are not installed. At this time, you can install them according to the requirements of yum, and you can use them at any time. For example:
yum install tree nmap sysstat lrzsz dos2unix -y
If the patch needs to be updated, execute