iftop - how to generate text file with its output?
Solution 1:
Since iftop-1.0pre3 (2014-01-01), a text output mode was added. This will be very useful to anyone trying to parse the output of iftop.
The command line option to activate text (batch) mode is:
-t use text interface without ncurses
When using text mode, the following options are available:
-s num print one single text output afer num seconds, then quit
-L num number of lines to print
Use the -h
option for help on iftop usage.
Example usage would be:
iftop -t > log.txt
iftop -t -s 180 > log.txt
If you want it to run in the background for 5 hours:
iftop -t -s 18000 > log.txt &
Check on background job with job
command.
Solution 2:
iptraf can log this level of detail. The output looks something like this:
Wed Apr 25 23:08:42 2012; UDP; eth0; 65 bytes; from 192.168.1.20:45061 to 192.168.1.254:53
Wed Apr 25 23:08:42 2012; UDP; eth0; 133 bytes; from 192.168.1.254:53 to 192.168.1.20:45061
Wed Apr 25 23:08:43 2012; UDP; eth0; 96 bytes; from 192.168.1.21:137 to 192.168.1.20:137
Wed Apr 25 23:08:44 2012; UDP; eth0; 472 bytes; from 192.168.1.21:1900 to 239.255.255.250:1900
Wed Apr 25 23:08:47 2012; ICMP; eth0; 159 bytes; from 192.168.1.20 to 173.176.222.82; dest unrch (port)