I know basic scripting only. Honestly, I am looking at each line right now to understand what it means. Please, if it's possible, can you remark on regex used here.
Also, I checked this script. There are some points I observed during testing:
a. When I execute the script with parameter of 'log tcp://1.2.3.4:80', it throws syntax error.
b. There's no check on IP octet / values; i.e. if we give an i/p of 1.2.3.4.5.6.7.8.9.0, then it will be printed as is.
c. When there are more than 2 ports, the second line puts p2, p3 n so on together, instead of on separate lines.
d. There are 100s of entries in a log file, so instead of feeding an IPort one by one, I want to automate it.
e. How can I add more conditional checks in the script. For example, if I see a record -> log tcp://1.2.3.4:3389 -> then I'd want to put it as -> RDP from home system 1.2.3.4 port 3389.
f. is there a way without regex :-P
Update:
I read the regex and just wanted to add what I understood from the script components above. Running the script for 2 ports -> log tcp://1.2.3.4:100-110:
Code:
S=${1:6} <-- initializing S as an array / what is 1:6?
IP="Logged this from host ${S%:*}" <-- implies take any value before :
P=${S##*:} <-- implies take any value after :
if [ "$P" = "*" ] <-- check if value of P is eq to *
then # case B
echo "$IP"
elif I=$(expr index $P '-') <-- locates the char '-' in P and returns index value (?) to I (why?) / how is I = 3 here?
then # case D
echo "$IP range ${P:0:$((I-1))} ${P:$I}" <-- $(P:0:2) is 100 (how?) / $(P:3) is port 110
elif I=$(expr index $P ',') <-- checks if there is a (,) in P
then # case C
echo -e "$IP port ${P:0:$((I-1))}\n$IP port ${P:$I}" <-- same check as above
else # case A
echo "$IP port $P"
fi
Best Regards.
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LEARN ABOUT NETBSD
iprop-log
IPROP-LOG(8) BSD System Manager's Manual IPROP-LOG(8)NAME
iprop-log -- maintain the iprop log file
SYNOPSIS
iprop-log [--version] [-h | --help] command
iprop-log truncate [-c file | --config-file=file] [-r string | --realm=string] [-h | --help]
iprop-log dump [-c file | --config-file=file] [-r string | --realm=string] [-h | --help]
iprop-log replay [--start-version=version-number] [--end-version=version-number] [-c file | --config-file=file] [-r string | --realm=string]
[-h | --help]
DESCRIPTION
Supported options:
--version
-h, --help
command can be one of the following:
truncate
-c file, --config-file=file
configuration file
-r string, --realm=string
realm
Truncates the log. Sets the new logs version number for the to the last entry of the old log. If the log is truncted by emptying
the file, the log will start over at the first version (0).
dump
-c file, --config-file=file
configuration file
-r string, --realm=string
realm
Print out all entries in the log to standard output.
replay
--start-version=version-number
start replay with this version
--end-version=version-number
end replay with this version
-c file, --config-file=file
configuration file
-r string, --realm=string
realm
Replay the changes from specified entries (or all if none is specified) in the transaction log to the database.
last-version
-c file, --config-file=file
configuration file
-r string, --realm=string
realm
prints the version of the last log entry.
SEE ALSO iprop(8)BSD February 18, 2007 BSD
03-29-2010
ort one by one, I want to automate it.