gnunet-search - Online in the Cloud

PROGRAM:

NAME

gnunet-search - a command line interface to search for content on GNUnet

SYNOPSIS

gnunet-search [OPTIONS] [+]KEYWORD [[+]KEYWORD]*

gnunet-search [OPTIONS] [+]URI

DESCRIPTION

Search for content on GNUnet. The keywords are case-sensitive. gnunet-search can be used
both for a search in the global namespace as well as for searching a private subspace.

-a LEVEL, --anonymity=LEVEL

The -a option can be used to specify additional anonymity constraints. If set to 0,
GNUnet will try to download the file as fast as possible, including using non-
anonymous methods. If you set it to 1 (default), you use the standard anonymous
routing algorithm (which does not explicitly leak your identity). However, a
powerful adversary may still be able to perform traffic analysis (statistics) to
over time infer data about your identity. You can gain better privacy by
specifying a higher level of anonymity, which increases the amount of cover traffic
your own traffic will get, at the expense of performance. Note that your download
performance is not only determined by your own anonymity level, but also by the
anonymity level of the peers publishing the file. So even if you download with
anonymity level 0, the peers publishing the data might be sharing with a higher
anonymity level, which in this case will determine performance. Also, peers that
cache content in the network always use anonymity level 1.

This option can be used to limit requests further than that. In particular, you can
require GNUnet to receive certain amounts of traffic from other peers before
sending your queries. This way, you can gain very high levels of anonymity - at the
expense of much more traffic and much higher latency. So set it only if you really
believe you need it.

The definition of ANONYMITY-RECEIVE is the following. 0 means no anonymity is
required. Otherwise a value of 'v' means that 1 out of v bytes of "anonymous"
traffic can be from the local user, leaving 'v-1' bytes of cover traffic per byte
on the wire. Thus, if GNUnet routes n bytes of messages from foreign peers (using
anonymous routing), it may originate n/(v-1) bytes of queries in the same
time-period. The time-period is twice the average delay that GNUnet defers
forwarded queries.

The default is 1 and this should be fine for most users. Also notice that if you
choose very large values, you may end up having no throughput at all, especially if
many of your fellow GNUnet-peers all do the same.

-c FILENAME, --config=FILENAME
use config file (defaults: ~/.config/gnunet.conf)

-h, --help
print help page

-L LOGLEVEL, --loglevel=LOGLEVEL
Change the loglevel. Possible values for LOGLEVEL are ERROR, WARNING, INFO and
DEBUG.

-o FILENAME, --output=FILENAME
Writes a GNUnet directory containing all of the search results to FILENAME.

-n, --no-network
Only search locally, do not forward requests to other peers.

-N VALUE, --results=VALUE
automatically terminate the search after receiving VALUE results.

-t DELAY, --timeout=DELAY
Automatically timeout search after DELAY. The value given must be a number
followed by a space and a time unit, for example "500 ms". Note that the quotes
are required on the shell. Otherwise the search runs until gnunet-search is
aborted with CTRL-C.

-v, --version
print the version number

-V, --verbose
print meta data from search results as well

NOTES

You can run gnunet-search with an URI instead of a keyword. The URI can have the format
for a namespace search or for a keyword search. For a namespace search, the format is
gnunet://fs/sks/NAMESPACE/IDENTIFIER. For a keyword search, use
gnunet://fs/ksk/KEYWORD[+KEYWORD]*. If the format does not correspond to a GNUnet URI,
GNUnet will automatically assume that keywords are supplied directly.

If multiple keywords are passed, gnunet-search will look for content matching any of the
keywords. The prefix "+" makes a keyword mandatory.

# gnunet-search "Das Kapital"

searches for content matching the keyword "Das Kapital". Whereas

# gnunet-search +Das +Kapital

Searches for content matching both mandatory keywords "Das" and "Kapital".

Search results are printed by gnunet-search like this:

gnunet-download -o "COPYING" gnunet://fs/chk/HASH1.HASH2.SIZE

Description: The GNU General Public License

Mime-type: text/plain

The first line contains the command to run to download the file. The suggested filename
in the example is COPYING. The GNUnet URI consists of the key and query hash of the file
and finally the size of the file. After the command to download the file GNUnet will
print meta-data about the file as advertised in the search result, here "The GNU General
Public License" and the mime-type (see the options for gnunet-publish on how to supply
meta-data by hand).

Use gnunet-search online using onworks.net services