.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" $Id: dump.8.in,v 1.12 2000/03/02 11:34:51 stelian Exp $
+.\" $Id: dump.8.in,v 1.16 2000/08/19 23:48:10 stelian Exp $
.\"
.Dd __DATE__
.Dt DUMP 8
.Op Fl L Ar label
.Op Fl s Ar feet
.Op Fl T Ar date
-.Ar filesystem
-.Nm dump
-.Op Fl 0123456789ackMnSu
-.Op Fl B Ar records
-.Op Fl b Ar blocksize
-.Op Fl d Ar density
-.Op Fl e Ar inode number
-.Op Fl f Ar file
-.Op Fl F Ar script
-.Op Fl h Ar level
-.Op Fl L Ar label
-.Op Fl s Ar feet
-.Op Fl T Ar date
-.Ar directory
+.Ar file-to-dump
.Nm dump
.Op Fl W Li \&| Fl w
.Pp
By default, the same output file name is used for each volume
after prompting the operator to change media.
.Pp
+.Ar file-to-dump
+is either a mountpoint of a filesystem
+or a directory to be backed up as a subset of a filesystem.
+In the former case, either the path to a mounted filesystem
+or the device of an unmounted filesystem can be used.
+In the latter case, certain restrictions are placed on the backup:
+.Fl u
+is not allowed and the only dump level that is supported is
+.Fl 0 .
+.Pp
The following options are supported by
.Nm Ns :
.Bl -tag -width Ds
Therefore
.Nm dump
will constrain writes to MAXBSIZE.
+The default blocksize is 10.
.It Fl c
Change the defaults for use with a cartridge tape drive, with a density
of 8000 bpi, and a length of 1700 feet.
this can be overridden by the environment variable
.Ev RMT .
.It Fl F Ar script
-Run script at the end of each tape. The script must return 0
-if the dump should continue without asking the user to change
-the tape, 1 if the dump should continue but ask the user
-to change the tape. Any other exit code will cause dump to
-abort.
+Run script at the end of each tape. The device name and the
+current volume number are passed on the command line.
+The script must return 0 if
+.Nm
+should continue without asking the user to change the tape, 1 if
+.Nm
+dump should continue but ask the user to change the tape.
+Any other exit code will cause
+.Nm
+to abort.
+For security reasons,
+.Nm
+reverts back to the real user ID and the real group ID before
+running the script.
.It Fl k
Use Kerberos authentication to talk to remote tape servers. (Only
available if this option was enabled when