Install icu-devtools by entering the following commands in the terminal:
sudo apt update sudo apt install icu-devtools
Description:
Development utilities for International Components for Unicode
ICU is a C++ and C library that provides robust and full-featured Unicode and locale support. This package contains programs used to manipulate data files found in the ICU sources and is a dependency of libicu-dev. End users would generally not need to install this package.
Homepage: http://www.icu-project.org
Version: 60.2-3ubuntu3
Section: libdevel