If you need to know the model number and/or serial number of a hard disk drive (HDD) in a Linux system, one tool that you can use to obtain that information as well as other information on the drive is the lsblk utility, which is included in the util-linux package. E.g.:

# lsblk -o MODEL,SERIAL,SIZE,STATE --nodeps
MODEL            SERIAL            SIZE STATE
WDC WD10EZEX-00W WD-WCC6Y4ZYE4Y3 931.5G running
DVD A  DH16ACSHR 238229911623     1024M running
vmDisk-CD        13043003455      1024M running

You can see the list of arguments you can provide to the program with lsblk -h.

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[/os/unix/linux/utilities/sysmgmt] permanent link

On a Linux system, you can use the lscpu command to obtain information on the system's Central Processing Unit (CPU). On a CentOS Linux system, the utility is included in the util-linux package. On a CentOS system, you can install that package using the yum package management utility, if it isn't already installed, using yum install util-linux. You can check on whether the lscpu program is already present using which lscpu and, on a CentOS system or another system that uses RPM, you can use rpm -qi util-linux to determine if the util-linux package is already installed.

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[/os/unix/linux/utilities/sysmgmt] permanent link

[68546.319229] CPU1:  Core temperature above threshold, cpu clock throttled (total events = 189995)
[68546.319240] CPU0:  Core temperature above threshold, cpu clock throttled (total events = 189989)
[68546.519121] CPU0:  Core temperature above threshold, cpu clock throttled (total events = 192228)
[68546.519131] CPU1:  Core temperature above threshold, cpu clock throttled (total events = 192234)

I checked to see if the lm_sensors package was installed on the system, so I could check fan speeds and the central processing unit (CPU) temperature. It wasn't installed, so I installed it from the root account with yum install lm_sensors.

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