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Linux display processes
Linux display processes












linux display processes

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.

linux display processes

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.

linux display processes

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.

  • Zombie: This is a halted process which, for some reason, still has a task_struct data structure in the task vector.
  • A process that is being debugged can be in a stopped state.
  • Stopped: The process has been stopped, usually by receiving a signal.
  • Interruptible waiting processes can be interrupted by signals whereas uninterruptible waiting processes are waiting directly on hardware conditions and cannot be interrupted under any circumstances. Linux differentiates between two types of waiting process interruptible and uninterruptible.
  • Waiting: The process is waiting for an event or for a resource.
  • Running: The process is either running (it is the current process in the system) or it is ready to run (it is waiting to be assigned to one of the system’s CPUs).
  • Linux processes have the following states:














    Linux display processes