libclass-singleton-perl software package provides implementation of a 'Singleton' class, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libclass-singleton-perl
libclass-singleton-perl is installed in your system.
Make ensure the libclass-singleton-perl package were installed using the commands given below,
$ sudo dpkg-query -l | grep libclass-singleton-perl *
You will get with libclass-singleton-perl package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Perl |
| Package | libclass-singleton-perl |
| Version | 1.5-1 |
| Description | implementation of a 'Singleton' class |
| Sub Section | Perl |
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