The data in these is often compressed. Here is a sample session with dbigcg . Any string is accepted . Any string is accepted . Sort options, typically '-T .
Any string is accepted -T .
Yes Input file format dbigcg reads in a GCG-format database. The data in these is often compressed. Output file format dbigcg creates four index files. All are binary but with a simple format. This header is followed by one record for each database file, giving the full file names for the reference file and sequence file.