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This section describes common
item options. The sections that describe particular item types define the
subset of these options applicable to a particular item type.
The -address option
defines the address of the item. No assumptions are made by the Tnm map
implementation about the format and the semantics of the address. Scripts
that interpret the value of a -address option should carefully check whether
the format is accept-able.
The -color option
gets or sets the color of the item. No assumptions are made on the format
of the color value. It is however suggested to use Tk color names.
The -ctime option
gives access to the creation date and time as a system-dependent integer
value. The resolution of the creation time is seconds. The value has the
same properties as time-stamps returned by the Tcl clock seconds command.
This option is read-only because the creation time-stamp is maintained
entirely by the map implementation.
The -expire option
defines the default lifetime for events and messages in seconds. Events
and messages are removed from the event history automatically if the -tick
option is greater than zero and the lifetime of the event or message has
The -font option
gets or sets the font of the item. No assumptions are made on the format
of the font value. It is however suggested to use Tk font names.
The -group option
is used to make the item a member of the group group. Setting this option
to an empty string removes the calling item from the group.
The -icon option
gets or sets the icon associated with an item. No assumptions are made
on the format of the icon value.
The -mtime option
gives access to the last modification date and time as a system-dependent
integer value. The resolution of the modification time is seconds. The
value has the same properties as time-stamps returned by the Tcl clock
seconds command. This option is read-only because the modification time-stamp
is maintained entirely by the map implementation.
The -name option
defines the name of the item. No assumptions are made by the Tnm map implementation
about the format and the semantics of the name. Scripts that interpret
the value of a -name option should care-fully check whether the format
The -path option
defines the path in the file system, where item statistics will be stored.
All statistic files are maintained in a sub-directory, which is used to
group together all statistics of a particular day.
The -store option
is used to maintain a list of message tag pattern that are used to control
whether a message is written to a file or not. Each element of the patternList
is matched against a message tag. A positive match will cause the message
to be saved in a file.
The -tags option
is used to tag items. Tags are a convenient way to group items together
to form target sets for management operations. For example, one might want
to tag all routers with the tag “router” and all dev-ices from vendor acme
with “acme”. The map# find command can later be used to retrieve all “routers”
from vendor “acme”.
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