zet.8

.\" -*- nroff -*-
.TH Z 1 "22 May 1998" "Debian GNU/Linux"
.SH NAME
zet \- check a harddisk
.SH SYNOPSIS
.B zet -f file [-l blocks] [-b blocks] [-s] [-n] [-q]

.SH DESCRIPTION
.B zet
Heavy duty harddisk check. A file in the filesystem, a partition on a
disk or even a hole disk (in fact any file) will be written with
crc-checked random-filled buffers. in the second stage those blocks
will be randomly read from the file an the crc-sum checked.  also
several times new blocks are written. errors are logged. this programm
simulates a usal harddiskacess under a heavyly loaded system and
brings up bugs in the os, the hardware or even the firmware of the
harddisk.

.SH "COMMAND\-LINE OPTIONS"

.TP 0.5i
.B -f file
give the file to write into.

.TP 0.5i
.B -l blocks
set the size of the file in count of 512-byte blocks. this may be
necessary if you don't write into a file with an definitive end (as a
partition or a whole disk).

.TP 0.5i
.B -b count
set the blocksize to 
.B count
512-byte blocks.

.TP 0.5i
.B -s
switch on sync mode. this sync each block immediatly after writing.

.TP 0.5i
.B -n
skip the initial stage, where the blocks are written. only useful, if
this was done before with this file.

.TP 0.5i
.B -q
does a sequencial check before going to the second (random seek,
read/write) stage.

.SH HISTORY

the name 'zet' was choosen, 'cause z is the last letter and zet was my
last chance to proof a real harddiskfailure.

.SH BUGS/LIMITATIONS

.B zet
can't handle badblocks on a disk.

.B zet
can't handle files larger than a 'long' can take.

.B zet
doesn't get the filesize when -n given.

.SH AUTHOR
mdt@pyneo.org (Michael Dietrich)

.SH SEE ALSO
fdisk(8) cfdisk(8) badblocks(8)