NAME

zeros - write sequence of bytes

SYNOPSIS

zeros [ -r ] [ -vvalue ] [ [ 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 -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 2880 1024 byte blocks

zeros 1024 2880 > kfs
echo 'ream fs kfs' > '#Kcons/kfsctl'
echo halt > '#Kcons/kfscons'

SOURCE

/appl/cmd/zeros.b

SEE ALSO

kfs(3)

ZEROS(1)

Rev:  Tue Feb 19 13:16:28 GMT 2002