How to generate the structure file in the gzipped format with Fortran code?

LAMMPS LAMMPS General Discussion
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Dear All,

Would anyone please tell me how to use Fortran code to generate the structure file in the gzipped format for the ‘read_data’ command in LAMMPS simulation?

I mean what is the format of this gzipped file? Is it just a simple binary file or something else?

Thank you in advance.

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At the risk of possibly giving a retarded answer to a question I might not be understanding correctly, I would say that a “gzipped” file is just a file a .gz file that you obtained by doing the gzip command in linux. From quickly checking the manual, the gzipped file should come from a usual text file, no? So you can just build the structure in a text file as usual and do the gzip command on it. Why do you want a fortran code to do it?

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Thank you for the reply.

I suppose this ‘gzipped’ file has its own special format for LAMMPS so I want to see if I can use Fortran to generate it. Now, I understand.

Yes, I can use the ‘tar’ command to compress the ASCII text format file.