---
name: "cbm"
section: "1"
platform: "linux"
package: "cbm"
version: "0.4-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cbm"
---

# cbm(1)

display in real time the network traffic speed

## NAME

**cbm** - display in real time the network traffic speed

## SYNOPSIS

```
cbm [--help] [--version]
```

## DESCRIPTION

**Color Bandwidth Meter (CBM) displays the current traffic on all network devices.**

**This program is so simple that it should be self-explanatory.**

## OPTIONS

- **--help**

  **Display some help and exit.**

- **--version**

  **Display version information and exit.**

## INTERACTIVE CONTROL

**cbm can be controlled with the following keys:**

- **Up/Down**

  **Select an interface to show details about.**

- **q**

  **Exit from the program.**

- **b**

  **Switch between bits per second and bytes per second.**

- **+**

  **Increase the update delay by 100ms.**

- **-**

  **Decrease the update delay by 100ms.**

## AUTHOR

**cbm was originally developed by Aaron Isotton \<aaron@isotton.com\>. You may use it under the** **terms of the GNU General Public License, version 2. The original website was** **http://www.isotton.com/utils/cbm/**

**Currently, source code and newer versions are available at** **https://github.com/resurrecting-open-source-projects/cbm**

**This manpage was written by Aaron Isotton and updated by Joao Eriberto Mota Filho.**