gettext-lint software package provides Collection of tools for checking PO and POT files, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gettext-lint
gettext-lint is installed in your system.
Make ensure the gettext-lint package were installed using the commands given below,
$ sudo dpkg-query -l | grep gettext-lint *
You will get with gettext-lint package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | gettext-lint |
| Version | 0.4-2.1 |
| Description | Collection of tools for checking PO and POT files |
| Sub Section | devel |