2009-07-23 20:13:03 UTC
That works for me with 9.04 on .tar.gz archives, but not for .cpio.gz archives.
This succeeds::
7z x foo.cpio.gz
7z l foo.cpio
This fails:
7z x -so foo.cpio.gz | 7z l -si -tcpio
7-Zip 9.04 beta Copyright (c) 1999-2009 Igor Pavlov 2009-05-30
7-Zip 9.04 beta Copyright (c) 1999-2009 Igor Pavlov 2009-05-30
Processing archive: foo.cpio.gz
Extracting: foo.cpio
Error: Not implemented
Errors: 1
ERROR: The pipe has been ended.