Which of these commands allows you to use shared libraries that are in /usr/local/lib?
A.
export LD_PRELOAD=/usr/local/lib
B.
export LD_LIBRARY_PATH=/usr/local/lib
C.
ldconfig /usr/local/lib
D.
ldd /usr/local/lib
Explanation/Reference:
ld.so searches for shared libraries in LD_LIBRARY_PATH before looking in the standard directories.
alternatively you can specify the directory in the /etc/ld.so.conf and running ldconfig.
Both B and C are correct. Answer B is a temporary solution. Answer C is a more permanent solution.