LDAP clients are governed by options set in the ways listed below with later methods overriding earlier ones.
$LDAPNOINIT/etc/openldap/ldap.conf$HOME/ldaprc,
$HOME/.ldaprc,
./ldaprc$LDAPCONF/etc/openldap/ldap.conf$HOME/$LDAPRC,
$HOME/.$LDAPRC,
./$LDAPRC$HOME/ldaprcAdditional resources:
at the command line: man ldap.conf
at the command line: ldapsearch -?