I am not sure how to user wget can some one help me with the shell script to post local and external ip of the laptop to an external website? ( both GET and POST methods )
curl http://www.whatismyip.com/automation/n09230945.asp
ifconfig | grep "inet addr" | fgrep -v 127.0.0.1 | tr ':' " " | awk '{print $3;}'
Related
I want to preface that I am a newbie that picked up shell scripting 2 weeks ago.
Hey guys I need help with something, hope someone can point me in the right direction. I have a script that works when I run it from the command line but every time I run it with a crontab, the output is a few empty files. Does anyone know why?
That's the code down there
#!/bin/bash
#Provide an IP address as an argument to use nmap
#make sure to add the full range with (0-225 or 0/24) at the end
IPADDRESS=$(hostname -I | awk '{print $1}')
network-scan(){
if [ $1 ]
then
sudo nmap -sn $1
else
sudo nmap -sn 192.168.1.0-255
fi
}
#Scan the whole network and only prints the IP addresses minus your own
#Sends the IP addresses to a file
network-scan | grep -i 'Nmap scan report' | \
sed 's/\ /\n/g'|sed 's/(//g'|sed 's/)//g' | \
grep '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' | grep -v ${IPADDRESS} > ip_addresses
#Scan the whole network and only prints the MAC addresses
#Sends the MAC addresses to a file
network-scan | grep -i 'MAC Address:' | \
awk '{print $3}' > mac_addresses
#Put the IP and MAC addresses in the same file
paste ip_addresses mac_addresses | \
column -s $'\t' -t > "scan_$(date +%d-%m-%Y_%H:%M:%S)"
#Notify that a file with the IP and MAC addresses has been created on the Desktop
echo "A file containing the results of the scan has been created on the Desktop"
exit 0
You are using
network-scan | grep
without passing any parameter.
Hence network-scan function always using
sudo nmap -sn 192.168.1.0-255
when you run it from command line are you passing any parameter ?
echo $IPADDRESS inside the script when executing at cron and at command line for debugging.
network-scan | grep -i 'Nmap scan report' | \
sed 's/\ /\n/g'|sed 's/(//g'|sed 's/)//g' | \
grep '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' | grep -v ${IPADDRESS}
Since you are obtaining empty output, validate each command and append(test) each OR operators to know where it is removing required output.
I want to see what countries are trying to access my VPS. I have installed a tool called "goiplookup", which was forked from another effort called "geoiplookup". If I type this at the command line:
goiplookup 8.8.8.8
It returns this:
US, United States
So I figured out how to get a list of IPs that are trying to access my server by using this:
sudo grep "disconnect" /var/log/auth.log | grep -v COMMAND | awk '{print $9}'
Which gives a long list of IPs like this:
1.1.1.1
2.2.2.2
3.3.3.3
I cannot figure out how to get this list of IPs to be processed by the "goiplookup" tool. I tried this:
sudo grep "disconnect" /var/log/auth.log | grep -v COMMAND | awk '{print $9}' | goiplookup
but that did not work. I also tried with no luck:
sudo grep "disconnect" /var/log/auth.log | grep -v COMMAND | awk '{print $9}' | xargs -0 goiplookup
Try this:
sudo grep "disconnect" /var/log/auth.log | grep -v COMMAND | awk '{print $9}' | sort | uniq | xargs -n 1 goiplookup
I added | sort | uniq to ensure each IP only appears once
and xargs -n 1 so that each found IP is processes by goiplookup
I would put it into a file and make a small utility to parse it:
sudo grep "disconnect" /var/log/auth.log | grep -v COMMAND | awk '{print $9}' | sort -u > ./file.txt
cat ./file.txt | while read -r line; do
temp$(echo $line)
goiplookup $temp
done
This will read through the file one line at a time and execute the goiplookup with each IP.
sudo grep disconnect /var/log/auth.log | awk '!/COMMAND/ && !seen[$0]++ {system("geoiplookup \""$9"\""}
Note that geoiplookup only allows one IP per invocation.
The whole thing can be done in awk, but using grep allows the rest to be run unprivileged.
Consider whether grep -w (match whole word) is appropriate, and in awk you can do a similar thing with !/(^|[^[:alnum:]_])COMMAND($|[^[:alnum:]_])/.
I just made a shell script, which works.
#!/bin/bash
readarray -t array < <(sudo grep "disconnect" /var/log/auth.log | grep -v COMMAND | awk '{print $9}' | sort | uniq)
for ip in "${array[#]}"
do
:
country=$(/usr/local/bin/goiplookup -c $ip)
echo "$ip $country"
done
I'm working on a script, that should find certain disks and add hostname to them.
I'm using this for 40 servers with a for loop in bash
#!/bin/bash
for i in myservers{1..40}
do ssh user#$i findmnt -o SIZE,TARGET -n -l |
grep '1.8T\|1.6T\|1.7T' |
sed 's/^[ \t]*//' |
cut -d ' ' -f 2 |
awk -v HOSTNAME=$HOSTNAME '{print HOSTNAME ":" $0}'; done |
tee sorted.log
can you help out with the quoting here? It looks like awk gets piped (hostname) from localhost, not the remote server.
Everything after the first pipe is running locally, not on the remote server.
Try quoting the entire pipeline to have it run on the remote server:
#!/bin/bash
for i in myservers{1..40}
do ssh user#$i "findmnt -o SIZE,TARGET -n -l |
sed 's/^[ \t]*//' |
cut -d ' ' -f 2 |
awk -v HOSTNAME=\$HOSTNAME '{print HOSTNAME \":\" \$0}'" ;
done | tee sorted.log
This is a shorter version of your stuff:
findmnt -o SIZE,TARGET -n -l |
awk -v HOSTNAME=$HOSTNAME '/M/{print HOSTNAME ":" $2}'
Applied to the above:
for i in myservers{1..40}
do ssh user#$i bash -c '
findmnt -o SIZE,TARGET -n -l |
awk -v HOSTNAME=$HOSTNAME '"'"'/M/{print HOSTNAME ":" $2}'"'"' '
done |
tee sorted.log
see: How to escape the single quote character in an ssh / remote bash command?
I'm trying to filter remote machine mac address , IP and hostname from 100 machines. Initially I'm capturing the information using below command.
$for i in `cat IP`;do in ssh root#$IP "ifconfig eth0 && hostname " ;done
eth0 Link encap:Ethernet HWaddr 00:MN:77:TR:XX:ZZ
inet addr:192.168.122.25 Bcast:192.168.122.255
Mask:255.255.224.0
test.com-112304
eth0 Link encap:Ethernet HWaddr 00:TT:77:MM:XX:YY
inet addr:192.168.122.22 Bcast:192.168.122.255
Mask:255.255.224.0
test.com-11035
Initially the output redirect to one file. from their I need to process output which comes in the above format.
I can able to accomplish to print IP and mac by line as follows
$cat input | awk '/HWaddr/{printf $NF;printf " ";getline;print $2;}' | cut -c1-18,24-
00:MN:77:TR:XX:ZZ 192.168.122.25
00:TT:77:MM:XX:YY 192.168.122.22
Actually I want to include hostname along with the output as follows
00:MN:77:TR:XX:ZZ 192.168.122.25 test.com-112304
00:TT:77:MM:XX:YY 192.168.122.22 test.com-11035
test.com will be common name for all hostname. I tried redirect both output in two variable and called as follows , but no luck.
a=`cat input | awk '/HWaddr/{printf $NF;printf " ";getline;print $2;}' | cut -c1-18,24-`
b=`grep test.com input`
echo $a $b | xargs -n2
Please shed some views
I'm trying to filter remote machine mac address , IP and hostname from 100 machines.
Machine mac address, from here: cat /sys/class/net/eth0/address
You have hostname utility, why don't you just hostname -i? You can parse ifconfig | grep inet | awk '{print $2}' | sed 's/addr://' and hope ifconfig versions are the same across all machines (some ifconfig verions return inet <ip> some return inet addr:<ip> like yours).
Hostname with hostname
Putting together:
echo $(cat /sys/class/net/eth0/address) $(ifconfig eth0 | grep inet | awk '{print $2}') $(hostname)
Executing a command for each line in some file is a job for xargs and remember about properly escaping your arguments:
cat IP | xargs -n1 -I{} ssh root#{} 'echo $(cat /sys/class/net/eth0/address) $(ifconfig eth0 | grep inet | awk '\''{print $2}'\'' | sed '\''s/addr://'\'') $(hostname)'
If you really have 100 machines, ansible might interest you.
If you really have that "input" file and you can't change it, you may parse it like this:
sed 's/eth0/#eth0/' input \
| xargs -d'#' -n1 -- bash -c '{ echo "$1" | grep HWaddr | awk "{print \$5}"; echo "$1" | grep inet | awk "{print \$2}" | sed "s/addr://"; echo "$1" | grep "^test.com"; } | tr "\n" " "; echo' --
And this hurts my eyes:
for i in `cat IP`; then
I am attempting to grab a specific field from a curl request. It works perfectly fine via the shell, but as soon as I try to assign a variable it stops working.
This is the stand-alone command.
curl --silent 'http://alerts.weather.gov/cap/wwaatmget.php?x=MNC131&y=0' | grep -E ' <title>' | awk -F '[<>]' '{print $3}'
This is the small bit from the script. It echos a blank variable.
weatheralert=$(curl --silent 'http://alerts.weather.gov/cap/wwaatmget.php?x=MNC131&y=0' | grep -E ' <title>' | awk -F '[<>]' '{print $3}')
echo "Current Weather Alert: $weatheralert"
Note that there is a tab character exists before <title> tag not 3 or 4 whitespace. So copy paste a tab character or use grep -P '\t<title>' command.
$ weatheralert=$(curl --silent 'http://alerts.weather.gov/cap/wwaatmget.php?x=MNC131&y=0' | grep -P '\t<title>'|awk -F '[<>]' '{print $3}')
$ echo "Current Weather Alert: $weatheralert"
Current Weather Alert: There are no active watches, warnings or advisories