Install chktex by entering the following commands in the terminal:
sudo apt update sudo apt install chktex
Finds typographic errors in LaTeX
ChkTeX finds typographic errors in LaTeX documents: * Supports over 40 warnings. * Supports ``\input'' command; both TeX and LaTeX version. Actually includes the files. ``TEXINPUTS''-equivalent search path. * Intelligent warning/error handling. The user may promote/mute warnings to suit his preferences. You may also mute warnings in the header of a file; thus killing much unwanted garbage. * Supports both LaTeX 2.09 and LaTeX2e. * Flexible output handling. Has some predefined formats and lets the user specify his own format. Uses a ``printf()'' similar syntax. ``lacheck'' compatible mode included for interfacing with the AUC-TeX Emacs mode.