/usr/bin/flow-capture
/usr/bin/flow-cat
/usr/bin/flow-dscan
/usr/bin/flow-expire
/usr/bin/flow-export
/usr/bin/flow-fanout
/usr/bin/flow-filter
/usr/bin/flow-gen
/usr/bin/flow-header
/usr/bin/flow-import
/usr/bin/flow-log2rrd
/usr/bin/flow-mask
/usr/bin/flow-merge
/usr/bin/flow-nfilter
/usr/bin/flow-print
/usr/bin/flow-receive
/usr/bin/flow-report
/usr/bin/flow-rpt2rrd
/usr/bin/flow-rptfmt
/usr/bin/flow-send
/usr/bin/flow-split
/usr/bin/flow-stat
/usr/bin/flow-tag
/usr/bin/flow-xlate
You may install this package on Debian with
apt-get
install flow-tools