fac command not found

In this troubleshooting guide we learn how to fix fac command not found error message

Introduction

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

fac: command not found

or when using sudo you get the following error message

sudo: fac: command not found

Solutions to fac: command not found

How To Fix fac: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu fac is provided by fex package.

fex is:

F*EX (Frams’s Fast File EXchange) is a service that can be used to allow users anywhere on the Internet to exchange very large files quickly and conveniently.

The sender uploads the file to the F*EX-server and the recipient automatically gets a notification e-mail with a download-URL.

Main features of F*EX:

  • file transfer of virtually unlimited file size
  • sender and recipient only need an e-mail program and a web browser (of any kind; they do not have to install any software)
  • RESEND and REGET for resuming after link failures at last sent byte
  • auto-notification of recipient
  • auto-deletion after download
  • auto-deletion after expiration date (default: 5 days)
  • full-users can create one time upload URLs for foreign users
  • full-users can create sub-users, who can send only to this full-user
  • full-users can create groups, an analogy to mailing lists, but for files
  • admin can allow (internal or external) user self-registration
  • admin can allow upload to public recipients without authentication
  • admin can allow upload for LAN users without registration (anonymous upload)
  • maintenance-free: no administration necessary beyond creating new F*EX accounts
  • multiple recipients only require one stored copy
  • F*EX uses HTTP and needs no firewall tunnels
  • support for streams, too (SEX: Stream EXchange)
  • shell clients provided for commandline users: fexsend and fexget. (fex-utils package)

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

sudo apt-get -y install fex

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

You can also use apt command to install fex.

sudo apt -y install fex

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

sudo aptitude install fex

Summary

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