tools/image-data

   1 #!/bin/sh
   2 # Create a disk image containing some (text) data.
   3
   4 if [ $# -eq 0 ]
   5 then
   6   echo "Fill disk of some capacity (in ~1 MB units) from stdin"
   7   echo "usage: image-data capacity"
   8   exit 1
   9 fi
  10
  11 dd if=/dev/zero of=data.img count=$(($1*2016))  # 32 tracks * 63 sectors/track of 512-byte sectors
  12 dd of=data.img conv=notrunc