# Display available libraries
ldconfig -p

# Update library resources
ldconfig

# Display libraries and file location
ldd

# Libraries available to apps in real-time
"Dynamic Libraries" (.so.)

# Libraries only available to apps when installed (imported)
"Static Libraries" (.a.)

# Standard (usual) library file location
/lib

# Sofware-accessible source for library info 
/etc/ld.so.cache 	# (binary)

# Human-readable source for library info
/etc/ld.so.conf 	# (points to /etc/ld.so.conf.d)