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.TH ZEROS 1
.SH NAME
zeros \- write sequence of bytes
.SH SYNOPSIS
.B zeros
[
.IR -r
]
[
.IR -v value
]
[ [
.IR blocksize ...
[
.IR numblocks
] ]
.SH DESCRIPTION
.B 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
.I -r
option requests that each block be the same, but randomly
generated. The
.IR -v value
option sets the value of each byte (default 0).
Typically
.IR 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.
.SH EXAMPLE
To create and initialize a file system containing 2880 1024 byte
blocks
.IP
.EX
zeros 1024 2880 > kfs
echo 'ream fs kfs' > '#Kcons/kfsctl'
echo halt > '#Kcons/kfscons'
.EE
.SH SOURCE
.B /appl/cmd/zeros.b
.SH SEE ALSO
.IR kfs (3)
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