cmd or script for full-automatic clone from Raspbian SD to another SD in card reader?

[dsyleixa]

hello, thanks fo providing this tool, but all the cmd line parameters are killing me...

which would be a cmd or a .sh script for full-automatic clone from Raspbian SD to a SD in card reader?

• no matter how many partitions are on the source SD (2,3,4,5, unknown?)
• no matter if the destination SD is somehow smaller than the source (given it's still big enough for storing all files, eg. 32GB to 31GB or 32GB to 16GB), feat. new optimized partition sizes.
• no matter if the destination SD is somehow bigger than the source (e.g., 8GB to 32GB, feat. new optimized partition sizes,
  • no matter if the target SD is fresh formatted or already pre-partitioned (perhaps giving a warning if not empty).

it must be fool-prove to never falsely accidentally swap source (actual boot SD) and destination (SD in USB card reader) without any need to check anything before (checks are expected to be handled automatically by the cmd/script).

[dsyleixa]

PS, e.g. if I enter sudo rpi-clone sdb then I get an error "sdb not found in the partition table"

that is too weird to understand and to handle, so automatic settings are required.