try-from command not found

In this troubleshooting guide we learn how to fix try-from command not found error message

Introduction

When you run more command in linux terminal / console, you get the following error message

try-from: command not found

or when using sudo you get the following error message

sudo: try-from: command not found

Solutions to try-from: command not found

How To Fix try-from: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu try-from is provided by tcpd package.

tcpd is:

Wietse Venema’s network logger, also known as TCPD or LOG_TCP.

These programs log the client host name of incoming telnet, ftp, rsh, rlogin, finger etc. requests.

Security options are:

  • access control per host, domain and/or service;
  • detection of host name spoofing or host address spoofing;
  • booby traps to implement an early-warning system.

To fix this problem, we can install more using the command below.

sudo apt-get -y install tcpd

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install tcpd.

sudo apt -y install tcpd

Or if you have aptitude installed you can use the following command.

sudo aptitude install tcpd

Summary

In this tutorial we learn how to fix try-from command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.