Query an LDAP directory. More information: https://docs.ldap.com/ldap-sdk/docs/tool-usages/ldapsearch.html.
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host -b base_ou 'memberOf=group1' displayName
ldapsearch -D 'admin_DN' -y 'password_file' -h ldap_host -b base_ou 'memberOf=group1' displayName
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host -b base_ou 'memberOf=group1' -z 5 displayName
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host -b base_ou 'memberOf=group1' -l 7 displayName
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host -b base_ou '(!(memberOf=group1))' displayName
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host '(&(memberOf=group1)(memberOf=group2)(memberOf=group3))' "displayName"
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host '(|(memberOf=group1)(memberOf=group1)(memberOf=group3))' displayName
ldapsearch -D 'admin_DN' -w 'password' -h ldap_host '(&(memberOf=group1)(memberOf=group2)(!(memberOf=group3)))' displayName