tcpdump -G option seems missing

Looking at, I became excited over the '-G rotate_seconds' option. Having retrieved and built the latest tcpdump ...

[rreitz@babar tcpdump-3.9.8]$ /usr/local/sbin/tcpdump -G
tcpdump version 3.9.8
libpcap version 0.8.3
Usage: tcpdump [-aAdDeflLnNOpqRStuUvxX] [-c count] [ -C file_size ]
                 [ -E algo:secret ] [ -F file ] [ -i interface ] [ -M secret ]
                 [ -r file ] [ -s snaplen ] [ -T type ] [ -w file ]
                 [ -W filecount ] [ -y datalinktype ] [ -Z user ]
                 [ expression ]

I don't have any -G option. Does anyone on this list know where the -G option is kept?


i just looked at the source code and it seems that the -G option is no longer there. the tcpdump man page you read is from 2005, so it seems that they havev may removed it.

I'm not sure whether -G was ever officially accepted. You can however
find a patch and some related discussion here:

Note that if you're happy to move forward your conveyor belt whenever a
bucket is full, there's also -C.