AlekZ' Scratchpad -

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• AlekZ' Scratchpad -

  Ubuntu version: for i in {1..10} do ( ip="10.0.1.$i" up=`ping -n -q -W1 -c2 $ip | fgrep transmitted | sed -e 's/.*100%.*/down/' -e 's/.*0%.*/up/'` mac=`arp -an $ip | awk '{print $4}'` oui=`f...

• Firewalls – AlekZ' Scratchpad

  Provided all route metrics are zeroes: cat /etc/sysconfig/netconf.C | tr '(' ' '| tr ')' ' ' | tr '"' ' '| tr ':' ' ' | tr '\t' ' '| tr -s ' '| sed -e 's/^ //' | sed 's/routes//' | awk '/route/ {print...

• Computers – AlekZ' Scratchpad

  CheckPoint log entries are divided by semi-colons and can have … many … fields. How to quickly check the positional number of a particular field in a particular log entry? Here’s a quick AWK one-liner...

• One-liners: simple ASA log parsers – AlekZ' Scratchpad

  denied//' -e 's/hit-cnt.*$//' | sed -e 's/([0-9][0-9]*) ->/ ->/' | less Result: tcp inside/10.1.140.159 -> outside/10.2.8.24(515) tcp inside/10.1.140.159 -> outside/10.2.8.24(515) tcp inside...

• Cisco – AlekZ' Scratchpad

  Multicasts are not forwarded Simple Service Discovery Protocol (SSDP) uses multicast IPv4 address 239.255.255.250. The local switches must be able to forward such traffic. On a Cisco switch you run th...

• CPU power management – AlekZ' Scratchpad

  CPU power management Some CPU’s and system boards allow you to change operating voltage and frequency, resulting in a corresponding change in performance, and power consumed. To test what frequencies ...