ref: db1eb844461b07a25ca49117851fa874fd88e065
dir: /man/1/zeros/
.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 2048 1024 byte
blocks
.IP
.EX
zeros 1024 2048 >kfs.file
mount -c {disk/kfs -r kfs.file} /n/local
.EE
.SH SOURCE
.B /appl/cmd/zeros.b
.SH SEE ALSO
.IR kfs (4)