unadvertise
unexport
universal unique identifiers
UNIX directories
UNIX permissions for DCE subdirectories
user
utc
utc_abstime
utc_addtime
utc_anytime
utc_anyzone
utc_ascanytime
utc_ascgmtime
utc_asclocaltime
utc_ascreltime
utc_binreltime
utc_bintime
utc_boundtime
utc_cmpintervaltime
utc_cmpmidtime
utc_gettime
utc_getusertime
utc_gmtime
utc_gmtzone
utc_localtime
utc_localzone
utc_mkanytime
utc_mkascreltime
utc_mkasctime
utc_mkbinreltime
utc_mkbintime
utc_mkgmtime
utc_mklocaltime
utc_mkreltime
utc_mulftime
utc_multime
utc_pointtime
utc_reltime
utc_spantime
utc_subtime
uuid
UUID,
uuid_create
uuid_create_nil
uuid_equal
uuid_from_string
uuid_hash
uuid_is_nil
uuid_to_string
uuidgen