431 .na
 432 \fB\fBnotrunc\fR\fR
 433 .ad
 434 .RS 11n
 435 Does not truncate the output file. Preserves blocks in the output file not
 436 explicitly written by this invocation of \fBdd\fR. (See also the preceding
 437 \fBof=\fR\fIfile\fR operand.)
 438 .RE
 439 
 440 .sp
 441 .ne 2
 442 .na
 443 \fB\fBsync\fR\fR
 444 .ad
 445 .RS 11n
 446 Pads every input block to the size of the \fBibs=\fR buffer, appending null
 447 bytes. (If either \fBblock\fR or \fBunblock\fR is also specified, appends
 448 \fBSPACE\fR characters, rather than null bytes.)
 449 .RE
 450 
 451 .RE
 452 
 453 .sp
 454 .ne 2
 455 .na
 456 \fB\fBoflag=\fR\fIvalue\fR[\fB,\fR\fIvalue\fR.\|.\|.\|]\fR
 457 .ad
 458 .sp .6
 459 Where \fIvalue\fRs are comma-separated symbols from the following list which
 460 affect the behavior of writing the output file:
 461 .sp
 462 .ne 2
 463 .na
 464 \fB\fBdsync\fR\fR
 465 .ad
 466 .RS 11n
 467 The output file is opened with the \fBO_DSYNC\fR flag set. All data writes will
 468 be synchronous. For more information on \fBO_DSYNC\fR see \fBfcntl.h\fR(3HEAD).
 469 .RE
 470 
 471 .sp
 472 .ne 2

 431 .na
 432 \fB\fBnotrunc\fR\fR
 433 .ad
 434 .RS 11n
 435 Does not truncate the output file. Preserves blocks in the output file not
 436 explicitly written by this invocation of \fBdd\fR. (See also the preceding
 437 \fBof=\fR\fIfile\fR operand.)
 438 .RE
 439 
 440 .sp
 441 .ne 2
 442 .na
 443 \fB\fBsync\fR\fR
 444 .ad
 445 .RS 11n
 446 Pads every input block to the size of the \fBibs=\fR buffer, appending null
 447 bytes. (If either \fBblock\fR or \fBunblock\fR is also specified, appends
 448 \fBSPACE\fR characters, rather than null bytes.)
 449 .RE
 450 


 451 .sp
 452 .ne 2
 453 .na
 454 \fB\fBoflag=\fR\fIvalue\fR[\fB,\fR\fIvalue\fR.\|.\|.\|]\fR
 455 .ad
 456 .sp .6
 457 Where \fIvalue\fRs are comma-separated symbols from the following list which
 458 affect the behavior of writing the output file:
 459 .sp
 460 .ne 2
 461 .na
 462 \fB\fBdsync\fR\fR
 463 .ad
 464 .RS 11n
 465 The output file is opened with the \fBO_DSYNC\fR flag set. All data writes will
 466 be synchronous. For more information on \fBO_DSYNC\fR see \fBfcntl.h\fR(3HEAD).
 467 .RE
 468 
 469 .sp
 470 .ne 2