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Full Discussion: Is there a BASH script allowing me to grep specifics from /var/log/messages?
Top Forums Shell Programming and Scripting Is there a BASH script allowing me to grep specifics from /var/log/messages? Post 302994714 by vgplayer54 on Monday 27th of March 2017 10:25:05 AM
Old 03-27-2017
Sure, here is the code I have so far that is not working:

Code:
#!/bin/bash

read -p "Enter month (first 3 letters): " month

read -p "Enter day of month: " day

read -p "Enter starting time (HH:MM:SS): " stime

read -p "Enter ending time (HH:MM:SS): " ftime

read -p "Enter chain: " chain

read -p "Enter any other modifiers (TTL, SRC, DSP, SPT, DPT, IN, OUT, etc): " modifier

if [ -z "$month" ]; then
    month='IN='
fi

if [ -z "$chain" ]; then
    chain='IN='
fi

if [ -z "$modifier" ]; then
    modifier='IN='
fi

if [ -z "$stime" ] && [ -z "$ftime" ]; then

cat /var/log/messages | grep -i "$month $day" | grep -i $chain | grep -i $modifier

else

cat /var/log/messages | grep -i "$month $day" | grep -i $chain | grep -i $modifier | sed -n "/$stime/,/$ftime/p"

fi

And here is an example of the /var/log/messages traffic:

Code:
Mar 27 10:24:29 router kernel: [ 2298.775662] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1791 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:31 router kernel: [ 2301.516556] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5181 PROTO=UDP SPT=59696 DPT=53 LEN=49 
Mar 27 10:24:32 router kernel: [ 2301.619601] FORWARD-DROPPEDIN=eth3 OUT=eth0 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=199.7.83.42 LEN=80 TOS=0x00 PREC=0x00 TTL=127 ID=32098 PROTO=UDP SPT=57894 DPT=53 LEN=60 
Mar 27 10:24:32 router kernel: [ 2301.619641] FORWARD-DROPPEDIN=eth3 OUT=eth0 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=202.12.27.33 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=26672 PROTO=UDP SPT=57894 DPT=53 LEN=49 
Mar 27 10:24:34 router kernel: [ 2304.527738] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1792 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:35 router kernel: [ 2305.243755] FORWARD-ACCEPTEDIN=eth3 OUT=eth1 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=195.165.11.5 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=8386 DF PROTO=UDP SPT=53 DPT=59696 LEN=49 
Mar 27 10:24:35 router kernel: [ 2305.244995] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5182 PROTO=UDP SPT=57560 DPT=53 LEN=49 
Mar 27 10:24:35 router kernel: [ 2305.245255] FORWARD-DROPPEDIN=eth3 OUT=eth0 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=192.58.128.30 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=7802 PROTO=UDP SPT=58259 DPT=53 LEN=49 
Mar 27 10:24:35 router kernel: [ 2305.277867] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1793 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:36 router kernel: [ 2306.030264] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1794 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:36 router kernel: [ 2306.249173] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5183 PROTO=UDP SPT=57560 DPT=53 LEN=49 
Mar 27 10:24:37 router kernel: [ 2306.885204] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1795 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:37 router kernel: [ 2307.264584] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5184 PROTO=UDP SPT=57560 DPT=53 LEN=49 
Mar 27 10:24:38 router kernel: [ 2307.634718] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1796 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:38 router kernel: [ 2308.384824] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1797 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:39 router kernel: [ 2309.279134] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5185 PROTO=UDP SPT=57560 DPT=53 LEN=49 
Mar 27 10:24:39 router kernel: [ 2309.339155] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1798 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:40 router kernel: [ 2309.773505] FORWARD-DROPPEDIN=eth3 OUT=eth0 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=198.41.0.4 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=10024 PROTO=UDP SPT=58259 DPT=53 LEN=49 
Mar 27 10:24:40 router kernel: [ 2310.089359] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1799 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:41 router kernel: [ 2310.839629] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1800 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:42 router kernel: [ 2311.991505] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1801 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:43 router kernel: [ 2312.741286] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1802 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:43 router kernel: [ 2313.292604] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5186 PROTO=UDP SPT=57560 DPT=53 LEN=49 
Mar 27 10:24:43 router kernel: [ 2313.396563] FORWARD-DROPPEDIN=eth3 OUT=eth0 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=199.7.83.42 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=32099 PROTO=UDP SPT=58259 DPT=53 LEN=49 
Mar 27 10:24:43 router kernel: [ 2313.396740] FORWARD-DROPPEDIN=eth3 OUT=eth0 MAC=00:0c:29:91:18:95:00:0c:29:46:29:d3:08:00 SRC=195.165.11.70 DST=193.0.14.129 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=26639 PROTO=UDP SPT=58259 DPT=53 LEN=49 
Mar 27 10:24:43 router kernel: [ 2313.493634] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1803 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:45 router kernel: [ 2315.046166] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1804 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:46 router kernel: [ 2315.796555] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1805 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:46 router kernel: [ 2316.546721] INPUT-DROPPEDIN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:50:56:c0:00:08:08:00 SRC=192.168.48.1 DST=192.168.48.255 LEN=78 TOS=0x00 PREC=0x00 TTL=64 ID=1806 PROTO=UDP SPT=137 DPT=137 LEN=58 
Mar 27 10:24:47 router kernel: [ 2317.292821] FORWARD-ACCEPTEDIN=eth1 OUT=eth3 MAC=00:0c:29:91:18:81:00:0c:29:02:2c:a0:08:00 SRC=195.165.11.5 DST=195.165.11.70 LEN=69 TOS=0x00 PREC=0x00 TTL=127 ID=5187 PROTO=UDP SPT=64648 DPT=53 LEN=49 
root@router:/home/ajfoncec/Checkpoint_4_Scripts#

Last edited by Corona688; 03-27-2017 at 12:57 PM..
 

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