How to delete a folder in CentOS
To delete a folder in Linux, use the rmdir command, but you can only delete folders with empty directories, so The commonly used command is rm, the specific method is as follows:
1. Delete folder command:
rm /home/test
2. Delete with parameters
(1) rm -r /home/ test
The -r parameter is to recursively delete the directory and its subdirectories in the parameter table.
The directory will be cleared and deleted. The user is usually prompted when deleting a directory containing write-protected files.
(2) rm -rf /home/test
-f does not prompt the user and deletes all files in the directory. Need to pay attention to check the path
(3) rm -ir /home/test
-i is interactive mode. With this option, the rm command prompts the user for confirmation before deleting any files.
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Alternatives to CentOS include RockyLinux, AlmaLinux, OracleLinux, and SLES. 1) RockyLinux and AlmaLinux provide RHEL-compatible binary packages and long-term support. 2) OracleLinux provides enterprise-level support and Ksplice technology. 3) SLES provides long-term support and stability, but commercial licensing may increase costs.

Alternatives to CentOS include UbuntuServer, Debian, Fedora, RockyLinux, and AlmaLinux. 1) UbuntuServer is suitable for basic operations, such as updating software packages and configuring the network. 2) Debian is suitable for advanced usage, such as using LXC to manage containers. 3) RockyLinux can optimize performance by adjusting kernel parameters.

The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Times can be specified as immediate (now), minutes ( minutes), or a specific time (hh:mm). Added information can be displayed in system messages.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

Steps to configure IP address in CentOS: View the current network configuration: ip addr Edit the network configuration file: sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0 Change IP address: Edit IPADDR= Line changes the subnet mask and gateway (optional): Edit NETMASK= and GATEWAY= Lines Restart the network service: sudo systemctl restart network verification IP address: ip addr

CentOS installation steps: Download the ISO image and burn bootable media; boot and select the installation source; select the language and keyboard layout; configure the network; partition the hard disk; set the system clock; create the root user; select the software package; start the installation; restart and boot from the hard disk after the installation is completed.

The command to restart the SSH service is: systemctl restart sshd. Detailed steps: 1. Access the terminal and connect to the server; 2. Enter the command: systemctl restart sshd; 3. Verify the service status: systemctl status sshd.

Restarting the network in CentOS 8 requires the following steps: Stop the network service (NetworkManager) and reload the network module (r8169), start the network service (NetworkManager) and check the network status (by ping 8.8.8.8)


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