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Intro
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sambatar is just a small extension to the smbclient program distributed with
samba. A basic front end shell script, smbtar, is provided as an interface
to the smbclient extensions.
Extensions
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This release adds the following extensions to smbclient,
tar [c|x] filename
creates or restores from a tar file. The tar file may be a tape
or a unix tar file. tar's behaviour is modified with the newer and tarmode
commands.
tarmode [full|inc|reset|noreset]
With no arguments, tarmode prints the current tar mode (by default full,
noreset). In full mode, every file is backed up during a tar command.
In incremental, only files with the dos archive bit set are backed up.
The archive bit is reset if in reset mode, or left untouched if in noreset.
In reset mode, the share has to be writable, which makes sambatar even
less secure. An alternative might be to use tarmode inc noreset which
would implement an "expanding incremental" backup (which some may prefer
anyway).
setmode <setmode string> filename
This is a "freebie" - nothing really to do with sambatar. This
is a crude attrib like command (only the other way around). Setmode string
is a combination of +-rhsa. So for example -rh would reset the read only
bit on filename.
newer filename
This is in fact part of the 1.9.13 samba distribution, but comes
into its own with sambatar. This causes tar (or get, mget, etc) to
only copy files newer than the specified file name. Could be used
against the previous nights (or whatever) log file to implement incremental
backups.
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