How use htop command in Linux?

A Guide to the htop command in Linux

Table of Contents

F1 – Help.
F2 – Setup.
Setup example. Step 1: Press the F2 Key and To Edit Meters. Step 2: Lock the selected option.
F3 – Search for a Process.
F4 – Filter through the processes.
F6 – Sort By.
F9 – Kill a process using the htop command.
F10 – Quit htop command.

How do you navigate in htop?

Use the arrow keys or the mouse to navigate the columns for “Setup” (these are the submenus), “Left column,” “Right column” or “Available meters.” Your further navigation options will be displayed dynamically in the bottom row.

What does htop command show?

htop command in Linux system is a command line utility that allows the user to interactively monitor the system’s vital resources or server’s processes in real time. htop is a newer program compared to top command, and it offers many improvements over top command.

How do you read htop commands?

Use htop like a pro:

Scroll the process list horizontally and vertically using the arrow keys.
Kill a process by pressing the F9′ key.
Renice a process by pressing the ‘F7’ or ‘F8’ key’s.
List open files used by a process by pressing the ‘l’ key.
Display only processes of a single user by pressing the ‘u’ key.

How do I run htop in terminal?

Once installed, just type htop at a terminal to launch it, and notice the great text-mode graph at the top of the display: But here’s the best part… just use your Up/Down arrow keys to select a process, and then you can kill it with the F9 key if you’d like, or you can change the priority by using the F7 and F8 keys.

How do you read htop output?

Understanding CPU Usage in htop

Blue: Display percentage of CPU used by low priority processes. (
Green: Displays percentage of CPU used for processes owned by normal users.
Red: Displays percentage of CPU used by system processes.
Orange: Displays percentage of CPU used by IRQ time.

What is load in htop?

Load Average It is the average of computational work performed by the CPU. 1.0 on a single core CPU would mean 100 percent utilization, similarly, 2.0 on a dual-core CPU represents 100% CPU usage.

What does S mean in htop?

Thanks. STATE (S) The state of the process: S for sleeping (idle) R for running D for disk sleep (uninterruptible) Z for zombie (waiting for parent to read its exit status) T for traced or suspended (e.g by SIGTSTP) W for paging.

How do I run htop in Ubuntu?

Procedure to install htop on Ubuntu Linux

Open the terminal application for the local system.
Update your Ubuntu system, run: sudo apt update && sudo apt upgrade.
Install htop on Ubuntu using apt: apt install htop.
To install the latest version of htop on Ubuntu Linux: snap install htop.
Launch htop, type: htop.

What is top and htop command?

Htop is a process viewer and a text mode application for system monitoring in real-time, similar to top . It’s easy to use, and it displays a complete list of the processes that are running. The htop tool is pre-installed in the distribution of Ubuntu Linux that is used to install the virtual server for this course.

What do red bars mean in htop?

CPU color bars Low processes in htop are indicated by an excellent value of greater than 0. Green – shows processes running as regular users in the system. Red – shows kernel threads. Aqua Blue – shows virtualized processes.

What is S and R in htop?

Here are the different values that the s, stat and state output specifiers (header “STAT” or “S”) will display to describe the state of a process: D Uninterruptible sleep (usually IO) R Running or runnable (on run queue) S Interruptible sleep (waiting for an event to complete)

What does D stand for in htop?

D Uninterruptible sleep (usually IO) R Running or runnable (on run queue) S Interruptible sleep (waiting for an event to complete)

What does D mean in htop?

uninterruptible sleep
State “D” (uninterruptible sleep) means that the process is in kernel space (in a system call), attempting to perform IO. These processes will not respond to signals (or SIGKILL) and cannot be debugged with gdb or pstack.