grepcidr software package provides Filter IP addresses matching IPv4 CIDR/network specification, 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 grepcidr
grepcidr is installed in your system.
Make ensure the grepcidr package were installed using the commands given below,
$ sudo dpkg-query -l | grep grepcidr *
You will get with grepcidr package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Network |
| Package | grepcidr |
| Version | 2.0-1 |
| Description | Filter IP addresses matching IPv4 CIDR/network specification |
| Sub Section | Net |
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