Hello good people. Linux monitoring is a crucial activity for any systems administrator. I know that having the right tools for this purpose is not an easy task. In this article, we’ll look at the Linux top command alternative called gotop.

Gotop is a terminal based graphical activity monitor inspired by gtop. I’ll cover gtop installation in a different article. Unlike Gtop which is written in Node.js, gotop is written in Golang.

Installing gotop on Linux – CentOS, Ubuntu e.t.c

Since gotop is distributed as a binary package, there is no prerequisite apart from git and curl packages which you can easily install on your Linux distribution.

Install git and curl on CentOS / Fedora

# yum -y install git curl

Installing git and curl on Ubuntu / Debian

# apt-get -y install git curl

Clone gotop source from Github.

# git clone git clone --depth 1 https://github.com/cjbassi/gotop.git
Cloning into 'gotop'...
remote: Counting objects: 603, done.
remote: Compressing objects: 100% (460/460), done.
remote: Total 603 (delta 140), reused 463 (delta 123), pack-reused 0
Receiving objects: 100% (603/603), 1.19 MiB | 3.46 MiB/s, done.
Resolving deltas: 100% (140/140), done.

Navigate to the gotop directory and run auto-installer script.

# cd gotop
# ./download.sh

The script will download a gotop binary for your Linux CPU architecture. Supported architectures are:

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   619    0   619    0     0    926      0 --:--:-- --:--:-- --:--:--   928
100  967k  100  967k    0     0   323k      0  0:00:02  0:00:02 --:--:--  483k

The command above will download the latest stable archive and extract it. You should see a binary package named gotop in your current directory, you need to copy this to a path in your $PATH.

# echo $PATH
# cp gotop /usr/local/bin
# cd
# which gotop

To run gotop, just type the name of the command on your terminal shell:

# gotop

This will run gotop with the default command options. You should get a screen like below:

The help page can be accessed from:

# gotop --help
Usage: gotop [options]Options:
  -c, --color=NAME      Set a colorscheme.
  -h, --help            Show this screen.
  -m, --minimal         Only show CPU, Mem and Process widgets.
  -r, --rate=RATE       Number of times per second to update CPU and Mem widgets [default: 1].
  -v, --version         Show version.

  default-dark (for white background)

From above help screen, you can pass some options to filter output you get. E.g

Check currently installed version:

# gotop -v

Show minimal output, i.e CPU and RAM usage stats using:

# gotop --minimal

The output should be similar to below:

Gotop key bindings

q or <Ctrl-c> : Used to quit gotop program
<up>/<down> and j/k: Navigate up and down
<Ctrl-d> and <Ctrl-u>: up and down half a page
<Ctrl-f> and <Ctrl-b>: up and down a full page
gg and G: Jump to top and bottom

<tab>: toggle process grouping
dd: kill the selected process or process group
h and l: zoom in and out of CPU and Mem graphs
?: toggles keybind help menu

You can also do sorting based on memory or cpu usage:

c: Sort based on CPU utilization
m: Sort based on Memory usage
p: Sort based PID

The color schemes for gotop are available under the colorschemes directory:

# ls colorschemes/
default_dark.go monokai.go solarized.go template.go
default.go monokai.png solarized.png

You can set a different Colorscheme can be set with the -c flag followed its name, e.g

# gotop -c monokai

It should start gotop with monokai colorscheme.

gotop colorscheme monokai

That’s all for today. Enjoy using a gotop command for easy to visualize process monitoring and your server compute resource utilization.

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