OpenLDAP - return value of UID using only ldapsearch

Question

I'd like ldapsearch to return only the value of the UID of a user based on a specified mail address. I can make it work with the following query:

ldapsearch -H ldap://localhost -w '...' -D "cn...com" -b  "ou...com" mail=... -LLL uid | grep 'uid:' | cut -d ' ' -f2-

This gives the desired result, but requires 2 other Linux commands.

If I remove the Linux commands, the output is:

dn: uid=...,ou=...
uid: ...

Q: Is it possible to retrieve the UID value based on a mail address, with only using command ldapsearch?

Note, I do not like to add arguments -tt, since that will write the variable to a file, which is undesired.