What is the best way to view all running processes including hidden ones on a Unix or Linux system

There are several ways to view running processes on a Unix or Linux system. The most common way is to use the ps command. The ps command will list all of the processes that are currently running. By default, the ps command will only list the processes that are owned by the current user. To view all of the running processes, including hidden ones, you can use the -a option.

Here is an example of how to use the ps command to view all of the running processes on a system:

ps -a

The ps command will output a list of all of the running processes. Each line of output will contain the following information:

  • The process ID (PID)
  • The user who owns the process
  • The start time of the process
  • The command that was used to start the process

You can also use the top command to view running processes. The top command will display a real-time view of the running processes. The top command will show you the following information:

  • The process ID (PID)
  • The user who owns the process
  • The start time of the process
  • The amount of CPU time that the process has used
  • The amount of memory that the process is using

The top command is a useful tool for monitoring the performance of a system. You can use the top command to identify processes that are using a lot of CPU time or memory.

Related Questions

  1. What is the ps command used for?
    • The ps command is used to list all of the running processes on a Unix or Linux system.
  2. What is the -a option used for?
    • The -a option is used to list all of the running processes, including hidden ones.
  3. What is the top command used for?
    • The top command is used to display a real-time view of the running processes.
  4. What information does the ps command output?
    • The ps command outputs the process ID (PID), the user who owns the process, the start time of the process, and the command that was used to start the process.
  5. What information does the top command output?
    • The top command outputs the process ID (PID), the user who owns the process, the start time of the process, the amount of CPU time that the process has used, and the amount of memory that the process is using.

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