The Sleuth Kit ver 4.4.2

Missing image name usage: blkls [-aAelvV] [-f fstype] [-i imgtype] [-b dev_sector_size] [-o imgoffset] image [images] [start-stop] -e: every block (including file system metadata blocks) -l: print details in time machine list format -a: Display allocated blocks -A: Display unallocated blocks -f fstype: File system type (use '-f list' for supported types) -i imgtype: The format of the image file (use '-i list' for supported types) -b dev_sector_size: The size (in bytes) of the device sectors -o imgoffset: The offset of the file system in the image (in sectors) -s: print slack space only (other flags are ignored -v: verbose to stderr -V: print version