optex command not found

Introduction

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

optex: command not found

or when using sudo you get the following error message

sudo: optex: command not found

Solutions to optex: command not found

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

In Ubuntu optex is provided by texlive-luatex package.

texlive-luatex is:

Packages for LuaTeX, a Unicode-aware extension of pdfTeX, using Lua as an embedded scripting and extension language. http://luatex.org/

This package includes the following CTAN packages:

addliga – Access basic ligatures in legacy TrueType fonts

auto-pst-pdf-lua – Using LuaLaTeX together with PostScript code

barracuda – Draw barcodes with Lua

bezierplot – Approximate smooth function graphs with cubic bezier splines for use with TikZ or MetaPost

checkcites – Check citation commands in a document

chickenize – Use lua callbacks for “interesting” textual effects

chinese-jfm – Luatexja-jfm files for Chinese typesetting

cloze – A LuaLaTeX package for creating cloze texts

combofont – Add NFSS-declarations of combo fonts to LuaLaTeX documents

cstypo – Czech typography rules enforced through LuaTeX hooks

ctablestack – Catcode table stable support

ekdosis – Typesetting TEI-xml compliant Critical Editions

emoji – Emoji support in (Lua)LaTeX

emojicite – Add emojis to citations

enigma – Encrypt documents with a three rotor Enigma

innerscript – Modifies automatic mathematics spacing

interpreter – Translate input files on the fly

kanaparser – Kana parser for LuaTeX

lua-typo – Highlighting typographical flaws with LuaLaTeX

lua-uca – Unicode Collation Algorithm library for Lua

lua-ul – Underlining for LuaLaTeX

lua-uni-algos – Unicode algorithms for LuaTeX

lua-visual-debug – Visual debugging with LuaLaTeX

lua-widow-control – Automatically remove widows and orphans from any document

luacode – Helper for executing lua code from within TeX

luacolor – Color support based on LuaTeX’s node attributes

luahyphenrules – Loading patterns in LuaLaTeX with language.dat

luaimageembed – Embed images as base64-encoded strings

luaindex – Create index using LuaLaTeX

luainputenc – Replacing inputenc for use in LuaTeX

luaintro – Examples from the book “Einfuhrung in LuaTeX und LuaLaTeX”

luakeys – A Lua module for parsing key-value options

lualatex-doc – A guide to use of LaTeX with LuaTeX

lualatex-math – Fixes for mathematics-related LuaLaTeX issues

lualatex-truncate – A wrapper for using the truncate package with LuaLaTeX

lualibs – Additional Lua functions for LuaTeX macro programmers

luamplib – Use LuaTeX’s built-in MetaPost interpreter

luaotfload – OpenType ’loader’ for Plain TeX and LaTeX

luapackageloader – Allow LuaTeX to load external Lua packages

luaprogtable – Programmable table interface for LuaLaTeX

luarandom – Create lists of random numbers

luatex85 – pdfTeX aliases for LuaTeX

luatexbase – Basic resource management for LuaTeX code

luatexko – Typeset Korean with Lua(La)TeX

luatextra – Additional macros for Plain TeX and LaTeX in LuaTeX

luavlna – Prevent line breaks after single letter words, units, or academic titles

luaxml – Lua library for reading and serialising XML files

lutabulartools – lutabulartools provides some useful commands for tabular matter

minim – A modern plain format for the LuaTeX engine

minim-math – Extensive maths for LuaTeX

minim-mp – Low-level mplib integration for LuaTeX

minim-pdf – Low-level PDF integration for LuaTeX

minim-xmp – Embed XMP metadata in PDF with LuaTeX

newpax – Experimental package to extract and reinsert PDF annotations

nodetree – Visualize node lists in a tree view

odsfile – Read OpenDocument Spreadsheet documents as LaTeX tables

optex – LuaTeX format based on Plain TeX and OPmac

pdfarticle – Class for pdf publications

pdfextra – Extra PDF features for (Op)TeX

penlight – Penlight Lua libraries made available to LuaLaTeX users

placeat – Absolute content positioning

plantuml – Support for rendering UML diagrams using the syntax and tool of PlantUML

pyluatex – Execute Python code on the fly in your LaTeX documents

selnolig – Selectively disable typographic ligatures

spelling – Support for spell-checking of LuaTeX documents

stricttex – Strictly balanced brackets and numbers in command names

truthtable – Automatically generate truth tables for given variables and statements

typewriter – Typeset with a randomly variable monospace font

uninormalize – Unicode normalization support

yamlvars – A YAML parser and tool for easy LaTeX definition creation

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

sudo apt-get -y install texlive-luatex

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

You can also use apt command to install texlive-luatex.

sudo apt -y install texlive-luatex

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

sudo aptitude install texlive-luatex

Summary

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