Random access gzip stream

Question

I\'d like to be able to do random access into a gzipped file. I can afford to do some preprocessing on it (say, build some kind of index), provided that the result of the pr

Answer 1

FWIW: I've developed a command line tool upon zlib's zran.c source code which can do random access to gzip with the creation of indexes for gzip files: https://github.com/circulosmeos/gztool

It can even create an index for a still-growing gzip file (for example a log created by rsyslog directly in gzip format) thus reducing in the practice to zero the time of index creation. See the -S (Supervise) option.