f3read.1

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.TH F3 "1"  "December 2015" "F3 6.0" "test real flash memory capacity"
.SH NAME
\fBf3write, f3read \fP- test real flash memory capacity
.SH SYNOPSIS
.nf
.fam C
\fBf3write\fP [\fB--start-at\fP=NUM] [\fB--end-at\fP=NUM] <PATH>
\fBf3read\fP  [\fB--start-at\fP=NUM] [\fB--end-at\fP=NUM] <PATH>
.fam T
.fi
.fam T
.fi
.SH DESCRIPTION
F3 (Fight Flash Fraud or Fight Fake Flash) tests the full capacity
of a flash card (flash drive, flash disk, pendrive). It writes to the
card and then checks if can read it. It will assure you haven't been
sold a card with a smaller capacity than stated.
.PP
When writing to flash drive, \fBf3write\fP fills the filesystem with 1GB
files named N.h2w, where N is a number (i.e. /[0-9]+/).
.PP
WARNING: all data on the tested disk might be lost!
.SH OPTIONS
.TP
\fB--start-at\fP=NUM
Initial number of file names. Default value is 1.
.TP
\fB--end-at\fP=NUM
Final number of file names. Default value is "infinity".
.SH EXAMPLE
To write over a flash drive mounted at /media/TEST:
.PP
.nf
.fam C
      $ f3write /media/TEST

.fam T
.fi
To read this flash drive:
.PP
.nf
.fam C
      $ f3read /media/TEST
.fam T
.fi
.SH SEE ALSO
For detailed information about the F3 tools, see:
.PP
http://oss.digirati.com.br/f3/
.SH AUTHOR
F3 was written by Michel Machado <michel@digirati.com.br>.
This manual page was first written by Joao Eriberto Mota Filho <eriberto@eriberto.pro.br>.