/usr/share/EMBOSS/test/data/prot.gcg8 is in emboss-test 6.4.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | GCG8 format protein sequence
GCG8 Length: 100 December 14, 1998 16:58 Check: 1414 ..
1 ACDEFGHIKL MNPQRSTVWY ACDEFGHIKL MNPQRSTVWY ACDEFGHIKL
51 MNPQRSTVWY ACDEFGHIKL MNPQRSTVWY ACDEFGHIKL MNPQRSTVWY
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