Convert group and user GeneratedUIDs to human-readable form on OS X

When working with users and groups on OS X you frequently find that you need to lookup GUIDs to get their human-readable names. Here are a few examples of the fairly painful syntax (good candidates for bash aliases).

Get a group/user for a known GeneratedUID from local directory services:

dscl . -search /Users GeneratedUID 00052AE8-5000-6000-9007-666F6B666A66
dscl . -search /Groups GeneratedUID 00052AE8-5000-6000-9007-666F6B666A66

and from LDAP:

dscl /LDAPv3/ldap.company.com/ -search /Groups GeneratedUID 00052AE8-5000-6000-9007-666F6B666A66
dscl /LDAPv3/ldap.company.com/ -search /Users GeneratedUID 00052AE8-5000-6000-9007-666F6B666A66
ldapsearch -LLLx -b ou=group,dc=company,dc=com "apple-generateduid=00052AE8-5000-6000-9007-666F6B666A66" cn
ldapsearch -LLLx -b ou=people,dc=company,dc=com "apple-generateduid=00052AE8-5000-6000-9007-666F6B666A66" uid

Get a GeneratedUID for a known user/group:

dscl localhost -read /Search/Users/auser | grep -m1 GeneratedUID | cut -c15-
dscl localhost -read /Search/Groups/agroup | grep -m1 GeneratedUID | cut -c15-
ldapsearch -LLLx -b ou=group,dc=company,dc=com "cn=agroup" apple-generateduid
ldapsearch -LLLx -b ou=people,dc=company,dc=com "uid=auser" apple-generateduid