diff options
Diffstat (limited to 'deadshred.1')
| -rw-r--r-- | deadshred.1 | 63 |
1 files changed, 62 insertions, 1 deletions
diff --git a/deadshred.1 b/deadshred.1 index be586b2..5c3eb63 100644 --- a/deadshred.1 +++ b/deadshred.1 @@ -4,6 +4,13 @@ deadshred \- override the contents of a device that may be broken .SH SYNOPSIS .B deadshred +[-o +.IR offset ] +[-l +.I length +| +-e +.IR postend ] .I device [< .IR random-source ] @@ -20,7 +27,61 @@ utility will skip any section it fails to override and retries it later. .SH OPTIONS -No options are supported. +The following options are supported: +.TP +.BR -e \ \fIpostend\fP +Position in the +.I device +to stop writing at. The byte indexed by the value +.I postend +will not be overwritten. +.TP +.BR -l \ \fIlength\fP +The number of bytes in the +.I device +to overwrite. If the +.B -o +option is unused (or the +.I offset +0 is used), this is equivalent to the +.B -e +option, however the +.B -o +option is used, writing will stop at +.I length +bytes past +.IR offset . +.TP +.BR -o \ \fIoffset\fP +The index of the first byte in the +.I device +to overwrite. +.PP +The value of the +.B -elo +flags can be expressed a sum of terms (delimited by +SP +.RB (' " " '), +comma +.RB (' , '), +or plus +.RB (' + ')) +expressed either as a integer representing a byte count, +or a real number with an optionally prefixed byte size +unit, which shall be either +.B B +(for bytes, which requires the number to be an integer) +or a prefix followed by +.B iB +(for base 1024) +or +.B B +(for base 1000), or just the prefix (also for base 1024). +The lowest supported prefix is +.B k +.RB ( K +is recognised as a synonym, but the value is otherwise +case sensitive). .SH OPERANDS The following operand is supported: |