Skip to content
Switch branches/tags

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


lagraph is a command-line utility that can be used to draw a ping graph over time.


  • Bars drawn using Unicode or ASCII character, supporting "half characters" for increased precision
  • True-color output with configurable saturation
  • Setting ping interval and/or count
  • Optional short or long timestamp

Use cases

  • Monitoring your connection quality and stability over time.
    • This is especially useful when using Wi-Fi or mobile connections such as 4G.


Using cargo

If you already have Rust installed, you can use Cargo to build and install lagraph:

cargo install lagraph

You need rustc 1.30 or later to build lagraph from source.


Use lagraph --help for a full list of command-line options.


Ping an host at the default interval (0.5 seconds):

lagraph <host>

Ping an host every 5 seconds, displaying a short timestamp on the left:

lagraph -i 5 -t short <host>

Ping an host with a maximum displayable ping value of 100 milliseconds and remove colors from the output:

lagraph -M 100 -C none <host>

Setting true-color output by default

To use true-color output by default, you need to set the environment variable COLORTERM to truecolor. You can make this permanent by adding the following line to your shell startup file (such as ~/.bashrc or ~/.zshrc):

export COLORTERM="truecolor"

On Windows, this can be done using the following commands in a Command Prompt:

:: Permanently set COLORTERM to "truecolor" for the current user
setx COLORTERM truecolor
:: Sets the variable in the current shell
set COLORTERM=truecolor

Note that not all terminals support true-color terminal output; see this gist for more information. Windows 10 supports true-color terminal output since the Creators Update (version 1703).


Copyright © 2018-2019 Hugo Locurcio and contributors

Licensed (at your option) under the MIT or Apache 2.0 license.