gzip: stdin: not in gzip format tar: Child returned status 1 tar: Error is not recoverable: exiting now

This error message suggests that the file you are trying to extract with the tar command is not in gzip format, even though you are using the gzip option. This can happen if the file is not compressed or if it is compressed in a different format.

To resolve this issue, you can try using a different compression option with the tar command, depending on the format of the compressed file. For example, if the file is compressed with bzip2, you can use the j option instead of the z option:

tar -xvjf filename.tar.bz2

If the file is not compressed, you can simply use the tar command without any compression option:

tar -xvf filename.tar

Make sure to replace "filename" with the actual name of the file you are trying to extract.