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--- projects:wifi_scanner [2020/01/06 17:23]
neil
+++ projects:wifi_scanner [2020/01/06 23:31]
neil
@@ Line 37: / Line 37: @@
 </code>
-To import the log file I run:
+These files are pretty large - for around a month of wifi scanning data is around 128.4 million lines of data (18.6Gb).  I run the following code to simplify the logs to just pairs of the datetime (in YYYY-MM-DD HH:MM) and the mac address:
 <code bash>
-php import.php tcpdump.log
+php trim.php tcpdump.log > trimmed_tcpdump.log
 </code>
-Which runs this file (note, this is accurate to the minute, rather than the second, to save space):
+This takes around 12 minutes which reduces the number of lines of data to around 20 million.  Then I import this directly to the mysql database using the mysql client:
-<code php>
+<code sql>
-tbd
+load data infile 'trimmed_tcpdump.log' into table wifi_data;
 </code>
+If you have any trouble with this command, you might want to split the file into more managble parts using ''split -l 1000000 trimmed_tcpdump.log''
+==== trim.php ====
+TBC
 ===== Analysing the data =====

neil.mckillop.org