xref: /inferno-os/man/1/zeros (revision b0eaa287d58bc24e9113f6b69a63afdae05ddf93)
ZEROS 1
NAME
zeros - write sequence of bytes
SYNOPSIS
zeros [ -r ] [ -v value ] [ [ blocksize ... [ numblocks ] ]
DESCRIPTION
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 -v value 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
.EX zeros 1024 2048 >kfs.file mount -c {disk/kfs -r kfs.file} /n/local
SOURCE
/appl/cmd/zeros.b
SEE ALSO
kfs (4)