# capg @ ws47 in ~ [11:58:22] 
$ apt-file search libvtkIOCore-6.2.so.6.2  
libvtk6.2: /usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so.6.2
libvtk6.2: /usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so.6.2.0

# capg @ ws47 in ~ [11:58:55] 
$ apt-file search libvtkIOCore-6.2.so      
libvtk6-dev: /usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so
libvtk6.2: /usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so.6.2
libvtk6.2: /usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so.6.2.0

# capg @ ws47 in ~ [11:59:12] 
$ sudo apt install libvtk6.2
Reading package lists... Done
Building dependency tree       
Reading state information... Done
libvtk6.2 is already the newest version (6.2.0+dfsg1-10build1+debian11.1+osrf1).
The following package was automatically installed and is no longer required:
  tcl-vtk
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 669 not upgraded.

# capg @ ws47 in ~ [11:59:38] 
$ stat /usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so
stat: cannot stat '/usr/lib/x86_64-linux-gnu/libvtkIOCore-6.2.so': No such file or directory