What does top command do in Linux?

top command is used to show the Linux processes. It provides a dynamic real-time view of the running system. Usually, this command shows the summary information of the system and the list of processes or threads which are currently managed by the Linux Kernel.

What is the use of top command in Unix?

The Unix top command is a very useful way to see what programs are currently running on the system and how heavily they are using system resources. (The command is named “top” because it shows the top users of the system.)

What is done by command top on Unix and Linux systems?

In UNIX-like systems, the top command reports valuable system information like running processes and resource usage. It shows processor activity and kernel-managed tasks in real-time. It’s one of the staple tools for system administrators.

How do you understand top command?

S – indicates the status of the process: S=sleep R=running Z=zombie (S) %CPU – This is the percentage of CPU used by this process (0.3) %MEM – This is the percentage of RAM used by the process (0.7) TIME+ –This is the total time of activity of this process (0:17.75)

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How do I find the top 10 processes in Linux?

Find Top 10 CPU Consuming Process

  1. –e : Select all the process.
  2. –o : User defined format, ps allows to specify the output format.
  3. –pid : Process ID list.
  4. –ppid : Parent process ID.
  5. –sort : Specify sorting order.
  6. cmd : Command’
  7. %cpu : CPU utilization of the process in “##.

What does netstat command do in Linux?

The network statistics ( netstat ) command is a networking tool used for troubleshooting and configuration, that can also serve as a monitoring tool for connections over the network. Both incoming and outgoing connections, routing tables, port listening, and usage statistics are common uses for this command.

How do I find the top process in Linux?

Check running process in Linux

  1. Open the terminal window on Linux.
  2. For remote Linux server use the ssh command for log in purpose.
  3. Type the ps aux command to see all running process in Linux.
  4. Alternatively, you can issue the top command or htop command to view running process in Linux.

What does du command do in Linux?

The du command is a standard Linux/Unix command that allows a user to gain disk usage information quickly. It is best applied to specific directories and allows many variations for customizing the output to meet your needs.

What is Time+ top command?

TIME+ (CPU Time): Depicts the total CPU time the task has used since it started, having the granularity of hundredths of a second. COMMAND (Command Name): Displays the command line used to start a task or the name of the associated program.

What is idle in top command?

linux. Ran the top command to check CPU performances and memory usage on the New RPi3 while running a browser.

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How do you read free output?

The first line of the free output lists:

  1. total Your total, physical (assuming no virtualization) memory.
  2. used How much of that is currently used (by anything)
  3. free How much of that is completely free (not used at all)
  4. shared (never anything there, ignore that column)
  5. buffers Memory used by kernel buffers.

How do I see memory usage on Linux?

Checking Memory Usage in Linux using the GUI

  1. Navigate to Show Applications.
  2. Enter System Monitor in the search bar and access the application.
  3. Select the Resources tab.
  4. A graphical overview of your memory consumption in real time, including historical information is displayed.

What is WA in top command?

%wa – this is iowait percentage. When a process or program requests some data, it first checks the processor caches (there are 2 or three caches there), then goes out and checks memory, and finally will hit disk. … The slower the disk, the higher the IO Wait % will be for each process.

How do I use Linux?

Its distros come in GUI (graphical user interface), but basically, Linux has a CLI (command line interface). In this tutorial, we are going to cover the basic commands that we use in the shell of Linux. To open the terminal, press Ctrl+Alt+T in Ubuntu, or press Alt+F2, type in gnome-terminal, and press enter.

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