NOTE: for help about the AS/400 version of gzip, please ask Henri GOMEZ , not support_at_gzip.org. This archive contains two gzip binaries for AS/400: one for OS V3R7, the other for V4R3. 1) create the SAVF file on the AS/400 with CRTSAVF 2) transfer the file gzip-as400-*.savf to the AS/400 3) use RSTLIB on the SAVF file GZIP for AS/400 can only compress/uncompress files on IFS. Do not try to compress/uncompress files in Database Syntax is : CALL gzip PARM('/home/mysub/myfile') will compress myfile file to a myfile.gz in /home/mysub and will delete the original myfile file. In the end I've got a compressed file /home/mysub/myfile.gz If I want to decompress (which must end with .gz): CALL gzip PARM ('-d' '/home/mysub/myfile2.gz') will uncompress the file myfile2.gz, create a new file myfile2 and delete the compressed one. In the end I've got a uncompressed file /home/mysub/myfile2 Enjoy :-) Henri GOMEZ