Shred

<yambe:breadcrumb>Security_tools|Security tools</yambe:breadcrumb>

shred

Writing zeros to a file

If there is a need to write all zeros to a file then one can use

 
   shred -n 1 -z <file-name>

Note that 'dd if=/dev/zero of=<file>' wont work as it wont end. So dd would have to be limited using bs, count, etc mechanisms.