Hi,

which handy Linux command line tools you know to give admin good image on data traffic size currently going on on the server?

i found "iftop" which is available in EPEL (redhat) i think, so installable via yum install iftop . It shows connections and amount of transfered data.

Next very handy tool i found nload (Network Load)

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(the graph is sliding to the left in realtime, one can use arrows to browse other network interfaces beside eth0)

nload install:

Installing nload network datatransfer monitor with realtime graphs in/out data on Redhat CentOS 5.11 64bit ! (other Linux will work too probably)


Code:
cd /usr/src;wget  http://downloads.sourceforge.net/project/nload/nload/0.7.2/nload-0.7.2.tar.gz
tar zxvf nload-0.7.2.tar.gz;rm -rf nload-0.7.2.tar.gz;cd nload-0.7.2
./configure
if found error "configure: error: C++ compiler cannot create executables", then do: yum install gc gcc++ *gcc-c++*


try again:
./configure


if found error "ncurses library or development files not found.", then i fixed by installing ncurses development pack:
Code:
yum install ncurses-devel
try again:
Code:
./configure
if no error:
Code:
make && make install

If one want to test network speed, one can use this: http://internetlifeforum.com/networking/4674-test-network-connection-speed-upload-download-linux-no-installation-required/