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The three most important Ids displayed by the top command are: There is also an Input/Message line between the Summary Area and Columns Header which needs no further explanation. When started for the first time, you’ll be presented with these traditional elements on the main top screen: 1) Summary Area 2) Fields/Columns Header 3) Task Area. That new name, possibly an alias, will then be reflected on top’s display and used when reading and writing a configuration file. And while top is referred to throughout this document, you are free to name the program anything you wish. The program provides a limited interactive interface for process manipulation as well as a much more extensive interface for personal configuration - encompassing every aspect of its operation. The types of system summary information shown and the types, order and size of information displayed for processes are all user configurable and that configuration can be made persistent across restarts.
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It can display system summary information as well as a list of processes or threads currently being managed by the Linux kernel. The top program provides a dynamic real-time view of a running system. Some of the most widely used commands are top, htop and ps.
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There are many process management commands which are used to check check running process in Ubuntu Linux. It is what it sounds like, a dead process.
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