Tar files with name scheme file.tar-?.gz won't open properly.
Attached file test.tar-1.gz contains:
$ tar tvfz test.tar-1.gz
-rw-r--r-- calvaris/calvaris 512 2021-03-09 12:40 test.bin
And test.bin was just created with dd if=/dev/urandom of=/tmp/test.bin count=1
.
If you open this this file-roller, you get
Edited by Xabier Rodríguez Calvar