i have 10 IP which have been listed on a CSV or text file , i need to read each time one line and get the IP and set on eth0 interface of the server, i found the bellow script which some how show me how to create new network setting but i do not know how i could read one line from CSV and put it on variable to use with bellow script . i would be greatly thankful if you give me some hint , thanks
https://wiki.gogrid.com/index.php/Customer:Automatically_convert_your_Linux_server_to_a_static_IP
May something like this:
#!/bin/sh
lineNumber=1
ip=`head -n $lineNumber test.csv | tail -n 1 | line`
echo $ip
Related
i have a file that is quite dynamic. Dynamic in a sense that Host and iSCSI_Name may come short or long. It works well for some host with long iqn name like the sample below but it doesn't work for host with shorter name.
Would appreciate if someone had done this or maybe had a previous script that creates a dynamic header that follows the length on the given data or vice versa.
With long iqn name
MAPPING
==================================================================================
Host Status iSCSI_Name State
==================================================================================
irefr-esz-011 online iqn.2000-01.com.vmware:irefr-esz-011-312901 active
==================================================================================
with short iqn and host name output looks like this. Data is not in place.
MAPPING
==================================================================================
Host Status iSCSI_Name State
==================================================================================
esz1 online irefr-esz-011-312901 active
==================================================================================
Currently, i had this on my script.
echo -e "\e[96m MAPPING\e[0m"
echo "=================================================================================="
printf '%-12s %-30s %-21s %-30s %-20s\n' Host Status iSCSI_Name State
echo "=================================================================================="
cat outputfile | column -t
echo "=================================================================================="
echo
output file:
irefr-esz-011 online iqn.2000-01.com.vmware:irefr-esz-011-312901 active
esz1 online irefr-esz-011-312901 active
irefr-esz-011 online iqn.2000-01.com.vmware:irefr-esz-011-312901 active
esz1 online irefr-esz-011-312901 active
irefr-esz-011 online iqn.2000-01.com.vmware:irefr-esz-011-312901 active
esz1 online irefr-esz-011-312901 active
What's about
SEP="===================================================================================="
(echo Host Status iSCSI_Name State; cat outputfile) | column -t | \
sed "1 s/\(.*\)/$SEP\n\1\n$SEP/";echo $SEP
sed picks the first line and decorates it with a leading and a trailing separator.
I am trying to upload a file in redis using command:
redis-cli -p <Port> -h <Host> -n <DB> -x set <key> < /tmp/file.json
The problem is : in redis value -
It is storing a \n at the end of line and I don't want this.
"{\"items\":{\"38749\":{\"buyone\":0,\"buytwo\":10},\"38712\":{\"buyone\":0,\"buytwo\":10},\"112775\":{\"buyone\":0,\"buytwo\":10},\"38721\":{\"buyone\":0,\"buytwo\":10},\"38720\":{\"buyone\":0,\"buytwo\":10},\"38714\":{\"buyone\":0,\"buytwo\":10},\"38726\":{\"buyone\":0,\"buytwo\":10},\"38733\":{\"buyone\":0,\"buytwo\":10},\"38729\":{\"buyone\":0,\"buytwo\":10},\"113708\":{\"buyone\":0,\"buytwo\":10},\"38731\":{\"buyone\":0,\"buytwo\":10},\"38745\":{\"buyone\":0,\"buytwo\":10},\"38732\":{\"buyone\":0,\"buytwo\":10},\"100074\":{\"buyone\":0,\"buytwo\":10},\"38730\":{\"buyone\":0,\"buytwo\":10},\"38719\":{\"buyone\":0,\"buytwo\":10},\"38723\":{\"buyone\":0,\"buytwo\":10},\"38755\":{\"buyone\":0,\"buytwo\":10},\"38760\":{\"buyone\":0,\"buytwo\":10}}}\n"
Since your file contains newlines, that's what gets stored in Redis.
You'll need to strip the newlines from your file before setting its contents to Redis. Depending on your OS, the method may vary. Here's a question about this: How do I remove newlines from a text file?
Finally got this working -
cat /tmp/up.json | redis-cli -n 20 --pipe
and up.json contents
set 'PACKAGES_CONFIG' '{"checkOfferFieldPrices":true,"showPrescInfoScreen":true,"showAddOnsScreen":true,"offerText":"1 + 1 with Lenskart Gold","bannerConfig":{"isVisible":true,"primaryText":"Hi %s, You are a GOLD Member!","secondaryText":"You are eligible for Buy 1 Get 1 offer on this order!"},"isExpandedByDefault":true,"isPreSelected":true,"displayBogoTabs": true, "defaultSelectedTabId": "buy2","tabConfig":[{"id":"buy1","title":"Buy 1","subtitle":"No Offer","enabled":true},{"id":"buy2","title":"Buy 2","subtitle":"Buy 1 Get 1 Free","enabled":true}]}'
When I'm hardcoding i. e.
server1=ip-10.237.40.10-aws-n-myhost
ssh - i /home/<passwordfile> akhil#$server1
It is working,but when I'm greping the host from other file its not working
Eg:
server2=$(grep - e host /home/akhil/configuration. File | awk FS, '{print $2} ' )
echo $server2
ssh - i /home/<passwordfile> akhil#$server2
While printing server 2 is fine, but when it is used in ssh I'm getting a error saying : not known host name.
I want to automate the script with a configuration file so that when ever the cluster changes I could simply change the ip address in configfile instead of changing in all my scripts.
I need help in this.
Thanks
I need some help with displaying how many times two strings are found on the same line! Lets say I want to search the file 'test.txt', this file contains names and IP's, I want to enter a name as a parameter when running the script, the script will search the file for that name, and check if there's an IP-address there also. I have tried using the 'grep' command, but I don't know how I can display the results in a good way, I want it like this:
Name: John Doe IP: xxx.xxx.xx.x count: 3
The count is how many times this line was found, this is how my grep script looks like right now:
#!/bin/bash
echo "Searching $1 for the Name '$2'"
result=$(grep "$2" $1 | grep -E "(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)")
echo $result
I will run the script like 'sh search test.txt John'.
I'm having trouble displaying the information I get from the grep command, maybe there's a better way to do this?
EDIT:
Okey, I will try to explain a little better, let's say I want to search a .log file, I want a script to search that file for a string the user enters as a parameter. i.e if the user enters 'sh search test.log logged in' the script will search for the string "logged in" within the file 'test.log'. If the script finds this line on the same line as a IP-address the IP address is printed, along with how many times this line was found.
And I simply don't know how to do it, I'm new to shell scripting, and was hoping I could use grep along with regular expressions for this! I will keep on trying, and update this question with an answer if I figure it out.
I don't have said file on my computer, but it looks something like this:
Apr 25 11:33:21 Admin CRON[2792]: pam_unix(cron:session): session opened for user 192.168.1.2 by (uid=0)
Apr 25 12:39:01 Admin CRON[2792]: pam_unix(cron:session): session closed for user 192.168.1.2
Apr 27 07:42:07 John CRON[2792]: pam_unix(cron:session): session opened for user 192.168.2.22 by (uid=0)
Apr 27 14:23:11 John CRON[2792]: pam_unix(cron:session): session closed for user 192.168.2.22
Apr 29 10:20:18 Admin CRON[2792]: pam_unix(cron:session): session opened for user 192.168.1.2 by (uid=0)
Apr 29 12:15:04 Admin CRON[2792]: pam_unix(cron:session): session closed for user 192.168.1.2
Here is a simple Awk script which does what you request, based on the log snippet you posted.
awk -v user="$2" '$4 == user { i[$11]++ }
END { for (a in i) printf ("Name: %s IP: %s count: %i\n", user, a, i[a]) }' "$1"
If the fourth whitespace-separated field in the log file matches the requested user name (which was passed to the shell script as its second parameter), add one to the count for the IP address (from field 11).
At the end, loop through all non-zero IP addresses, and print a summary for each. (The user name is obviously whatever was passed in, but matches your expected output.)
This is a very basic Awk script; if you think you want to learn more, I urge you to consult a simple introduction, rather than follow up here.
If you want a simpler grep-only solution, something like this provides the information in a different format:
grep "$2" "$1" |
grep -o -E '(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)' |
sort | uniq -c | sort -rn
The trick here is the -o option to the second grep, which extracts just the IP address from the matching line. It is however less precise than the Awk script; for example, a user named "sess" would match every input line in the log. You can improve on that slightly by using grep -w in the first grep -- that still won't help against users named "pam" --, but Awk really gives you a lot more control.
My original answer is below this line, partly becaus it's tangentially useful, partially because it is required in order to understand the pesky comment thread below.
The following
result=$(command)
echo $result
is wrong. You need the second line to be
echo "$result"
but in addition, the detour over echo is superfluous; the simple way to write that is simply
command
Have a text file w/ around 3 million URL's of sites I want to block.
Trying to ping them one by one (yes, I know it is going to take some time).
Have a script (yes, I am a bit slow in BASH) which reads the lines one at a time from text file.
Obviously cannot print text file here. Text file was created >> w/ Python some time ago.
Problem is that ping returns "unknown host" w/ every entry. If I make a smaller file by hand using the same entries the script works. I thought it may be a white space or end of line issue so tried addressing that in script. What could the issue possibly be?
#!/bin/bash
while read line
do
li=$(echo $line|tr -d '\n')
li2=$(echo $li|tr -d ' ')
if [ ${#line} -lt 2 ]
then
continue
fi
ping -c 2 -- $li2>>/dev/null
if [ $? -gt 0 ]
then
echo 'bad'
else
echo 'good'
fi
done<'temp_file.txt'
Does the file contains URLs or hostnames ?
If it contains URLs you must extract the hostname from URLs before pinging:
hostname=$(echo "$li2"|cut -d/ -f3);
ping -c 2 -- "$hostname"
Ping is used to ping hosts. If you have URLs of websites, then it will not work. Check that you have hosts in your file , example www.google.com or an IP address and not actual full website urls. If you want to check actual URLs, use a tool like wget and another tool like grep/awk to grab for errors like 404 or others. Last but not least, people who are security conscious will sometimes block pinging from the outside, so take note.
C heck if the file contains windows-style \r\n line endings: head file | od -c
If so, to fix it: dos2unix filename filename
I wouldn't use ping for this. It can easily be blocked, and it's not the best way to check for either ip addresses or if a server presents web pages.
If you just want to find the corresponding IP, use host:
$ host www.google.com
www.google.com is an alias for www.l.google.com.
www.l.google.com has address 209.85.149.106
www.l.google.com has address 209.85.149.147
www.l.google.com has address 209.85.149.99
www.l.google.com has address 209.85.149.103
www.l.google.com has address 209.85.149.104
www.l.google.com has address 209.85.149.105
As you see, you get all the IPs registered to a host. (Note that this requires you to parse the hostname from your urls!)
If you want to see if a URL points at a web server, use wget:
wget --spider $url
The --spider flag makes wget not save the page, just check that it exists. You could look at the return code, or add the -S flag (which prints the HTTP headers returned)