How to uninstall ml-lex from Ubuntu

Uninstall ml-lex

To uninstall just ml-lex package itself from Ubuntu execute on terminal:

sudo apt-get remove ml-lex

Uninstall ml-lex and it's dependent packages

To uninstall the ml-lex package and any other dependant package which are no longer needed on Ubuntu.

sudo apt-get autoremove ml-lex

Purging ml-lex

If you also want to delete configuration and/or data files of ml-lex from Ubuntu then this will work:

sudo apt-get purge ml-lex

To delete configuration and/or data files of ml-lex and it's dependencies from Ubuntu then execute:

sudo apt-get autoremove --purge ml-lex

ml-lex package information

name ml-lex
section devel
description

Lexical analyzer generator for Standard ML

website www.smlnj.org/ 
maintainer ubuntu-devel-discuss@lists.ubuntu.com

More information about apt-get remove

Advanced Package Tool, or APT, is a free software user interface that works with core libraries to handle the installation and removal of software on Debian, Ubuntu and other Linux distributions. APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages, either from precompiled files or by compiling source code.

apt-get is the command-line tool for handling packages, and may be considered the user's "back-end" to other tools using the APT library.

apt-get remove is identical to install except that packages are removed instead of installed. Note that removing a package leaves its configuration files on the system. If a plus sign is appended to the package name (with no intervening space), the identified package will be installed instead of removed.

See Also

How to install ml-lex package on Ubuntu