sudo apt-get install ttf-kacst-one
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed
  ttf-kacst-one
0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.
Need to get 0 B/33.5 kB of archives.
After this operation, 115 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  ttf-kacst-one
Install these packages without verification [y/N]? y
Selecting previously deselected package ttf-kacst-one.
(Reading database ... 320917 files and directories currently installed.)
Unpacking ttf-kacst-one (from .../ttf-kacst-one_4.0-0ubuntu1_all.deb) ...
Processing triggers for fontconfig ...
Setting up ttf-kacst-one (4.0-0ubuntu1) ...