tim@dell-desktop:/mnt$ cd /usr/lib/x86_64-linux-gnu
tim@dell-desktop:/usr/lib/x86_64-linux-gnu$ ls -la /usr/lib/x86_64-linux-gnu |grep cfitsio
-rw-r--r--   1 root root   2419662 Aug  4  2019 libcfitsio.a
lrwxrwxrwx   1 root root        15 Aug  4  2019 libcfitsio.so -> libcfitsio.so.8
lrwxrwxrwx   1 root root        20 Aug  4  2019 libcfitsio.so.8 -> libcfitsio.so.8.3.47
-rw-r--r--   1 root root   1498520 Aug  4  2019 libcfitsio.so.8.3.47
tim@dell-desktop:/usr/lib/x86_64-linux-gnu$