You can use shntool's cue mode:
% shntool cue -c *.flac
FILE "joined.wav" WAVE
TRACK 01 AUDIO
INDEX 01 0:00:00
TRACK 02 AUDIO
INDEX 01 0:49:03
TRACK 03 AUDIO
INDEX 01 3:56:59
TRACK 04 AUDIO
INDEX 01 7:27:02
TRACK 05 AUDIO
INDEX 01 11:27:37
TRACK 06 AUDIO
INDEX 01 14:04:09
TRACK 07 AUDIO
INDEX 01 21:09:06
TRACK 08 AUDIO
INDEX 01 25:43:70
TRACK 09 AUDIO
INDEX 01 30:26:17
TRACK 10 AUDIO
INDEX 01 35:46:06
TRACK 11 AUDIO
INDEX 01 42:29:31
Original files:
shntool len *.flac
length expanded size cdr WAVE problems filename
0:49.03 8650700 --- -- ---xx Track01.flac
3:07.56 33118556 --- -- ---xx Track02.flac
3:30.18 37086380 --- -- ---xx Track03.flac
4:00.35 42418364 --- -- ---xx Track04.flac
2:36.47 27628988 --- -- ---xx Track05.flac
7:04.72 74962988 --- -- ---xx Track06.flac
4:34.64 48484172 --- -- ---xx Track07.flac
4:42.22 49796588 --- -- ---xx Track08.flac
5:19.64 56422172 --- -- ---xx Track09.flac
6:43.25 71148044 --- -- ---xx Track10.flac
4:09.59 44062412 --- -- ---xx Track11.flac
46:39.15 493779364 B (totals for 11 files, 0.4894 overall compression ratio)