CIFSDD(8) System Administration tools CIFSDD(8)

# [NAME](#NAME)

cifsdd - convert and copy a file over SMB

# [SYNOPSIS](#SYNOPSIS)

.HP 24u

cifsdd \[OPERAND]...

.HP 24u

cifsdd OPTION

# [DESCRIPTION](#DESCRIPTION)

.PP This tool is part of the [**samba**(7)](/man/os/samba/samba.7) suite.

.PP Copy a file, converting and formatting according to the operands.

.PP bs=BYTES

read and write up to BYTES bytes at a time (default: 4096)

.RE .PP ibs=BYTES

read up to BYTES bytes at a time (default: 4096)

.RE .PP obs=BYTES

write BYTES bytes at a time (default: 4096)

.RE

.PP if=FILE

read from FILE instead of stdin

.RE .PP of=FILE

write to FILE instead of stdout

.RE

.PP count=N

copy only N input blocks

.RE .PP seek=N

skip N obs-sized blocks at start of output

.RE .PP skip=N

skip N ibs-sized blocks at start of input

.RE

.PP direct

use direct I/O for data

.RE .PP sync

use synchronous writes

.RE .PP oplock

take oplocks on the input and output files

.RE

# [AUTHOR](#AUTHOR)

.PP The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed.

.PP The cifsdd manpage was written by Andreas Schneider.

11/05/2026 Samba 4.25.1

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Document: cifsdd(8) from samba 4.25.1-r1 (Chainguard OS)
Source: https://github.com/samba-team/samba