improved tcpdum-icmp, depend on touch file beeing present

README.md

@@ -14,6 +14,9 @@ Scripts to run rude/crude, traceroute and collect results
  ln -s ~/rude/rude/rude .
  ln -s ~/rude/crude/crude .
 
+ add to /etc/sudoers.d/dragonlab
+   $USER ALL=(ALL)       NOPASSWD: /usr/sbin/tcpdump 
+
 ~~~~~
 ### Start polling when ready :
 crontab dragonlab/etc/crontab.cfg

dragonlab/bin/autostart.sh

@@ -43,3 +43,7 @@ if ! pgrep -u $USER -f $vmstat >/dev/null; then
     $vmstat 2> /dev/null > /dev/null&
 fi
 
+if ! pgrep -u $USER -f /usr/sbin/tcpdump >/dev/null; then
+    $HOME/dragonlab/bin/start-icmp
+fi
+   

dragonlab/bin/dragonlab.sudoers

-# add to /etc/sudoers.d/dragonlab
-up ALL=(ALL)       NOPASSWD: /usr/sbin/tcpdump
+echo add to /etc/sudoers.d/dragonlab
+echo $USER ALL=(ALL)       NOPASSWD: /usr/sbin/tcpdump 

dragonlab/bin/start-icmp

@@ -6,8 +6,8 @@
 
 # pick interface with default route
 IF=`ip route get 158.38.62.1 | perl -ne 'print $1 if / dev (\w+) /'`
-if test "$IF" != ""; then
+if test "$IF" != "" && -f $HOME/dragonlab/etc/tcpdump-imcp ; then
      tomidnight=$((`date --date 'tomorrow 00:00' +%s`-`date +%s` - 1))
-    /usr/sbin/tcpdump -i $IF -G $tomidnight -W 1 -w ${logpath}/icmp-%F-%T.pcap icmp 2> ${logpath}/icmp.log
+     sudo /usr/sbin/tcpdump -i $IF -G $tomidnight -W 1 -w ${logpath}/icmp-%F-%T.pcap icmp 2>> ${logpath}/icmp.log
 fi