1. Add a static session to the network card, and configure the IP address of this session to xxx123
2. Test the network connectivity to see if you can ping Baidu and download the Baidu homepage file.
3. Set the network card to automatically obtain an IP address through the DHCP protocol when the system is powered on.
4. Mount the local CD and configure the yum source as rhel8.repo
5. Install httpd through yum
6. Use yum to query which software package the ifconfig command is provided by
7. Uninstall the software package httpd
8. Download the tree source code package and compile and install it
9. View process information through the two options of the ps command
10. Check the process number of the sshd service through the pgrep and pidof commands
11. Make the dd if=/dev/zero of=/root/file bs=1M count=8190 command operation run in the foreground
12. Transfer the above operation to the background and pause it
13. Make the dd if=/dev/zero of=/root/file2 bs=1M count=1024 command operation run in the background
14. View the task list in the background
15.Restore dd if=/dev/zero of=/root/file bs=1M count=8190 and let it continue running in the background
16. Query the process of dd if=/dev/zero of=/root/file bs=1M count=8190 command and kill it through kill
17. Create the g1 group and require the creation of a file redhat.txt belonging to the redhat user g1 group.
18. Create a new /sc directory. The group it belongs to is the group group. The root user and group group users can create files in this directory. Others do not have any permissions.
19. The newly created /cw directory is the storage directory of the Finance Department. It can only be written by Finance Department personnel, and the files created by Finance Department personnel automatically belong to the mygroup group.
20. Set the helen user to be able to read, write, and execute the /sc and /cw directories.
21. Set the /test directory as a public storage directory that can be read, written, and executed by all users, but users can only delete their own files (t permission)
22. New files created in /test/dir automatically belong to the temp group
