ChkFlsh for macOS?

Question

System Programming

There is such a ChkFlsh utility that writes a file of the maximum size to a USB-drive, which allows you to identify drives whose actual size differs from that specified in the ROM by the seller. Are there any for macs?

Answer 1

dd if=/dev/zero of=flash drive?

Answer 2

man dd
dd if=/dev/urandom of=file count=flash_size
dd if=/dev/zero of=file bs=1 seek=`dd if=file of=flash 2>&1 | grep -Eo '^[0-9]+ '` count=0
cmp file flash