Zeros
writes a sequence of bytes to standard output. The arguments
specify the nature of the bytes,
block size in bytes, and the number of blocks to output.
The
-r
option requests that each block be the same, but randomly
generated. The
-vvalue
option sets the value of each byte (default 0).
Typically
zeros
has a specialised use:
ensuring a file has the desired number of blocks in it to hold a file system image,
before reaming it.
EXAMPLE
To create and initialize a file system containing 2048 1024 byte
blocks
zeros 1024 2048 >kfs.file
mount -c {disk/kfs -r kfs.file} /n/local