ubuntu@172:~$ ls -l /usr/bin/pager /etc/alternatives/pager /bin/less
-rwxr-xr-x 1 root root 169800 Jul 26 17:34 /bin/less
lrwxrwxrwx 1 root root      9 Oct 20 16:37 /etc/alternatives/pager -> /bin/less
lrwxrwxrwx 1 root root     23 Oct 20 16:37 /usr/bin/pager -> /etc/alternatives/pager