Wednesday 14 March 2018 photo 12/15

$Pdflatex undefined control sequence documentclass: >> http://zxr.cloudz.pw/download?file=pdflatex+undefined+control+sequence+documentclass << (Download) Pdflatex undefined control sequence documentclass: >> http://zxr.cloudz.pw/read?file=pdflatex+undefined+control+sequence+documentclass << (Read Online) TeX interprets zero as a control sequence with single character (ASCII-zero) and this control sequence (reported by TeX as ^^@ in log file) is not defined. Use only ASCII or one-byte encoding or UFT8 for your source files. Each LaTeX document has basically this structure (which will not run though, since packageA and packageB are not valid packages (as far as I know!) documentclass{book} % Replace book with some other class usepackage{packageA} % Load package named packageA usepackage{packageB} LaTeX and ConTeXt These are formats. A format is just a set of TeX macros (well, not exactly so simple). They define a lot of macros for you to use. For example, LaTeX defines the documentclass and begin{document} macros while ConTeXt defines starttext . It will take a much longer paragraph to answer My guess is that you're trying to use TeX instead of LaTeX. TeX won't recognize the documentclass command. Make sure you use LaTeX. Undefined control sequence. l.1 documentclass [12pt]{article} ? I have no idea what to do. I do not want to install texlive-full package as it contains 1000 things that I will not use. I just need simple tex. I used to use Zenwalk Operating system before switching to ubuntu and it I had tetex installed in it. But now 18 Feb 2016 Each LaTeX document has basically this structure (which will not run though, since packageA and packageB are not valid packages (as far as I know!) documentclass{book} % Replace book with some other class usepackage{packageA} % Load package named packageA usepackage{packageB} % Load package then running pdflatex , then bibtex , then pdflatex twice on the following code should work and produce the expected output: documentclass[a4paper,11pt]{report} usepackage[english]{babel} % faire de l'anglais usepackage[latin1]{inputenc} % accents dans le source usepackage[T1]{fontenc} % accents The reason for this problem, as Werner told you in his comment, is, that you are running TeX instead of LaTeX . You can advise emacs to automatically run LaTeX . To do so, you should have a look at the local variable comments of the file. They should look, e.g., like: %%% Local Variables: %%% mode: latex then running pdflatex , then bibtex , then pdflatex twice on the following code should work and produce the expected output: documentclass[a4paper,11pt]{report} usepackage[english]{babel} % faire de l'anglais usepackage[latin1]{inputenc} % accents dans le source usepackage[T1]{fontenc} % accents dans le DVI The issue is that when LaTeX sees a backslash , it interprets what follows as a command. Here, there is no such command as Users, so you will get an Undefined Control Sequence error. To avoid this, when writing text you should write a backslash as backslash . For writing long file paths and urls, it may sometimes be$