In CentOS 7 system, you can use the following commands to view hard disk, IO and hard disk monitoring status information:
lsblk: Display information about block devices (including hard disks and partitions) in the system, including device name, type, size, etc.fdisk -l: Displays disk and partition information in the system, including disk name, size, partition table type, etc.df -h: Display the disk usage of the file system, including file system, mount point, used space, available space, etc.iostat: Displays IO statistics of disks and devices, including read and write rates, average waiting time, etc.iotop: Real-time display of disk IO conditions, including process IO usage, read and write rates, etc.smartctl: Used to read the SMART information of the disk, and can detect the health status, temperature, etc. of the disk.sar -d: Display disk IO statistics, including the IO status, transfer rate, etc. of each device.ncdu: Interactively displays the disk usage of files and directories, which can help locate files or directories that occupy large disk space.
These commands provide a wide range of viewing functions for hard disk, IO and hard disk monitoring status information. You can choose the appropriate command according to your needs to obtain the required information.
Please note that some commands may need to be run as root or require the corresponding software package to be installed. If the command cannot be executed or cannot be found, you can try to use sudothe command to obtain root privileges or use yumthe command to install the required software package.
In summary, the above are the commands commonly used in CentOS 7 systems to view hard disk, IO and hard disk monitoring status information. By using these commands, you can obtain detailed information about hard disks, disk usage, IO statistics, etc.