$ sudo apt-get update
$ sudo apt-get install libc-icap-mod-contentfiltering

libc-icap-mod-contentfiltering is installed in your system.

Make ensure the libc-icap-mod-contentfiltering package were installed using the commands given below,

$ sudo dpkg-query -l | grep libc-icap-mod-contentfiltering*

You will get with libc-icap-mod-contentfiltering package name, version, architecture and description in a table

libc-icap-mod-contentfiltering package basic information: