setenv LD_LIBRARY_PATH "/path/to/lib/dir:$LD_LIBRARY_PATH"


export LD_LIBRARY_PATH="/path/to/lib/dir:$LD_LIBRARY_PATH"



echo /path/to/lib/dir >> /etc/ld.so.conf
lddconfig


For help, with either features of dynamic linking or the location of the config file on your system, consult the man mages.

man ld.so
man ldconfig