To install libclamunrar7 just follow these instructions.
sudo apt-get install libclamunrar7
Which will install libclamunrar7 and any other packages on which it depends.
|Maintainer||ClamAV Team <firstname.lastname@example.org>|
|Description||anti-virus utility for Unix - unrar support this software is the integration with mail servers (attachment scanning). The package provides a flexible and scalable multi-threaded daemon in the clamav-daemon package, a command-line scanner in the clamav package, and a tool for automatic updating via the Internet in the clamav-freshclam package. The programs are based on libclamav7, which can be used by other software.|