---
name: "ttylog"
section: "8"
platform: "linux"
package: "ttylog"
version: "0.31-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ttylog"
---

# ttylog(8)

serial device logger

## NAME

ttylog - serial device logger

## SYNOPSIS

**ttylog** \[-b\|--baud\] \[-d\|--device\] \[-f\|--flush\] \[-t\|--timeout\] \> /path/to/logfile

If you are not using the timeout option, you can stop it running by pressing a ctrl-c when it's going to the screen or doing "kill -HUP nnnn" (where nnnn is the process ID for ttylog) if running in the background.

## DESCRIPTION

This program writes everything that comes from a serial device like /dev/ttyS1 onto stdout. You can specify the device and the baud rate of the device.

## OPTIONS

ttylog follows the GNU command line syntax, with long options starting with two dashes('-'). A summary of the options is included below:

- **-h, --help**

  Displays a little help

- **-v, --version**

  Version number of ttylog plus Copyright information

- **-b, --baud**

  Baud rate of the device. Available baud rates: 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600 and 115200

- **-d --device**

  The serial device. For example /dev/ttyS1

- **-f --flush**

  Output buffers are flushed after every write.

- **-t --timeout**

  How long to run ttylog, in seconds.

## AUTHOR

This manual page was originally written by Tibor Koleszar \<t.koleszar@somogy.hu\>, for the Debian GNU/Linux system.  Modifications and updates written by Robert James Clay \<jame@rocasa.us\>.