<s>
Synctool	B-Protocol
is	O
an	O
open-source	B-Application
configuration	B-General_Concept
management	I-General_Concept
system	O
,	O
written	O
by	O
Walter	O
de	O
Jong	O
,	O
systems	O
expert	O
at	O
SURFsara	O
.	O
</s>
<s>
Synctool	B-Protocol
aims	O
to	O
be	O
easy	O
to	O
understand	O
,	O
learn	O
and	O
use	O
.	O
</s>
<s>
It	O
is	O
built	O
in	O
Python	O
and	O
makes	O
use	O
of	O
SSH	B-Protocol
(	O
with	O
host	O
or	O
key	O
based	O
authentication	O
)	O
and	O
rsync	B-Application
.	O
</s>
<s>
The	O
'	O
overlay	O
 '	O
directory	B-Application
tree	I-Application
contains	O
the	O
files	O
and	O
directories	B-Application
that	O
should	O
be	O
copied	O
(	O
or	O
'	O
synced	O
 '	O
)	O
to	O
the	O
target	O
host	O
.	O
</s>
<s>
The	O
'	O
tasks	O
 '	O
directory	B-Application
contains	O
scripts	O
that	O
are	O
not	O
linked	O
to	O
specific	O
files	O
but	O
to	O
a	O
host	O
or	O
host	O
groups	O
;	O
these	O
tasks	O
can	O
be	O
used	O
for	O
software	O
package	O
management	O
.	O
</s>
<s>
Synctool	B-Protocol
by	O
itself	O
offers	O
limited	O
package	O
management	O
tools	O
.	O
</s>
