Install procps by entering the following commands in the terminal:
sudo apt update sudo apt install procps
Description:
/proc file system utilities
This package provides command line and full screen utilities for browsing procfs, a "pseudo" file system dynamically generated by the kernel to provide information about the status of entries in its process table (such as whether the process is running, stopped, or a "zombie"). . It contains free, kill, pkill, pgrep, pmap, ps, pwdx, skill, slabtop, snice, sysctl, tload, top, uptime, vmstat, w, and watch.
Homepage: https://gitlab.com/procps-ng/procps
Version: 2:3.3.12-3ubuntu1
Section: admin