---
name: "j1939spy"
section: "1"
platform: "linux"
package: "can-utils"
version: "2023.03-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/j1939spy"
---

# j1939spy(1)

manual page for j1939spy 2023.03-1

## NAME

j1939spy - manual page for j1939spy 2023.03-1

## SYNOPSIS

**j1939spy** \[*OPTION*...\] \[\[*IFACE:*\]\[*NAME\|SA*\]\[*,PGN*\]\]

## DESCRIPTION

j1939spy: An SAE J1939 spy utility

## OPTIONS

- **-v**, **--verbose**

  Increase verbosity

- **-P**, **--promisc**

  Run in promiscuous mode (= receive traffic not for this ECU)

- **-b**, **--block**=*SIZE*

  Use a receive buffer of SIZE (default 1024)

- **-t**, **--time\[**=*a*\|d\|z\|A\]

  Show time: (a)bsolute, (d)elta, (z)ero, (A)bsolute w date