Different functions are selected by using one or more of the following command line options. If no
options are given, the default is to display the contents of the cache file to the screen (stdout).
-h Display all available command line options and exit.
-v Be verbose.
-V Display the program version and exit. Additional program specific information will be displayed
if verbose mode is also used (e.g. '-vV'), which can be useful when submitting bug reports.
-aaddress[-nhostname][-t0]
Add a new record to the cache file. The IP address will be added to the cache file using the
current time as the timestamp and with a resolved name hostname. If -t0 is specified, the record
will be considered permanent, and will not be removed (during a purge) or expired. If a hostname
is not specified with the -n option, then the address will be used instead, and the record will
be flagged as unresolved.
-c Create a new cache file. If used alone, this option will create a new, empty cache file. If
used with the import option, a new cache file will be created before importing the data. An
error will occur if the file cache-file already exists.
-daddress
Delete a record from the cache file using the specified address.
-faddress
Find and display information for address from the cache file. A single line similar to that
produced by the -l option will be displayed unless verbose mode is enabled, in which case a more
detailed listing will be produced.
-iname[-c]
Import data into the cache file from the file name. The import file must be a valid tab
delimited text file, such as that created by the export option. If the imported data contains
records already present in the cache file, those records will be overwritten by the imported
data. The cache file must exist unless the -c option is specified, in which case, a new cache
file will be created for the imported data.
-l List the contents of the cache file. This is the default action of the program, so does not
necessarily need to be specified. If verbose mode is enabled, a report title, column headers and
summary totals will also be displayed.
-pnum Purge the cache file of entries older than num days. If num is not specified, then a default of
7days will be used. if verbose mode is enabled, each purged record will be printed and the
total number of purged records will be displayed.
-s[-tnum]
Display cache file information/statistics. If a TTL value (in days) is specified using the -t
option, it will be used to calculate how many records are older than num days, otherwise, the
default value of 7days will be used.
-nname Specify the name to use as the resolved hostname when adding records to the cache.
-tnum Time to live (TTL) value. If used along with the -p (purge) option, it specifies how many days a
record will remain valid. Any record that is older than num days is considered expired and will
be purged. If used with the -a (add) option, a zero value will cause the record to be considered
permanent.
-xname Export data from a cache file to a tab delimited text file named name. If the text file name
exists, it will be overwritten.