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iftop
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Interactive environment for view
(STEP 0) INSTALL
apt-get install iftop
(STEP 1) COMMAND LINE
iftop -nNBP -i eth0
-B for bytes units (by default without this option its in bits), -i to specify interface, -n no hostname lookup, -N no port lookup, -P show ports
(STEP 2) ONCE IN PROGRAM
then once logged in
hit Shift-T to see total column
Reminder of the columns in interface on the right side:
TOTALS (if pressed shift T), 2 sec, 4 sec, and 10 sec speeds
and hit t until get desired row output style
CHEATSHEET
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If start iftop with this: iftop -nNBP -i eth0
T ===== Totals column and both directions (RX & TX)
tT ===== Totals column and both on one line (RX + TX)
ttT ==== Totals column and showing only RX Traffic
tttT ==== Totals column and showing only TX Traffic
T – means SHIFT-T and shows totals column
t -means pressing t key and it alternates view mode (Both, RX+TX, RX, TX)
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ifstat
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Interface bandwidth continous scrolling output
(STEP 0) INSTALL
apt-get install ifstat
(STEP 1) COMMAND LINE
ifstat -bat
-b bytes instead of bits
-a every interface
-t time stamps