ldapsearch is located in the openldap-clients package.

ldapsearch -xh ldap.example.com uid=usr1234

ldapsearch -xh ldap.example.com uid=usr1234 uniqueIdentifier

ldapsearch -xh ldap.example.com uniqueIdentifier=042282876 uid uidNumber gidNumber homedirectory gsaRegistrar

ldapsearch -xh ldap.example.com -b 'ou=bluepages, o=example.com' email=user@example.com

ldapsearch -xh ldap.example.com -b 'ou=bluepages, o=example.com' email=user@example.com dept

ldapsearch -xh ldap.example.com -b 'ou=bluepages, o=example.com' serialnumber=042282876 

ldapsearch -xh ldap.example.com -b 'ou=bluepages, o=example.com' serialnumber=042282876 dept

ldapsearch -xh ldap.example.com uniqueIdentifier=042282876 uid uidNumber gidNumber homedirectory gsaRegistrar loginshell

ldapsearch -h  ldap.example.com m -bou=ldap,dc=example,dc=com fullserialnumber=042282876 

ldapsearch -h  ldap.example.com -bou=ldap,dc=example,dc=com uidNumber=103 uid