i want to make a script which will deauth automatically all mac address which has been saved before in a text file.
So my text file looks like this:
C8:xx:xx:AC:xx:xx
3A:xx:Xx:12:xx:xx
upto 20 lines.
I want each mac address either in a single text file or storing in a variable.
To run for example
aireplay-ng --deauth 10 -b $mac1
Thanks
Use xargs:
<input-file xargs -L 1 aireplay-ng --deauth 10 -b
To filter only valid mac addresses, use grep in the pipeline:
<input-file grep -o -E '(([[:xdigit:]]){2}:){5}([[:xdigit:]]){2}' |
xargs -L 1 aireplay-ng --deauth 10 -b
You can do this with a simple while loop, replace input.file with the file name.
while read -r line; do aireplay-ng --deauth 10 -b $line; done < input.file
One trick you could do to make sure that you only get MAC addresses (assuming no other lines have colons and lines with MAC addresses don't have other content):
while read -r line; do aireplay-ng --deauth 10 -b $line; done < cat input.file | grep :
Related
I am trying to visualise all new sockets created after a save point in Debian Linux 5.14:
ss -a > state
ss -a | grep -v -f state
Expected output : Nothing
Observed output : The same as ss -a
I checked the content of the file and every line does properly end with a $ indicating it's multine.
Can't truely grasp why this happens, did anyone encounter this before ?
Use -F so the lines are treated as fixed strings and not regexes. This ensures that items like * and [::ffff:127.0.0.1] are not treated as wildcards and character classes.
For good measure, use -x to match whole lines.
$ ss -a > state
$ wc -l < state
1867
$ ss -a | grep -vxFf state | wc -l
56
I am trying to do a one liner command that would delete the first line from a bunch of files. The list of files will be generated by grep command.
grep -l 'hsv,vcv,tro,ztk' ${OUTPUT_DIR}/*.csv | tr -s "\n" " " | xargs /usr/bin/sed -i '1d'
The problem is that sed can't see the list of files to act on.I'm not able to work out what is wrong with the command. Please can someone point me to my mistake.
Line numbers in sed are counted across all input files. So the address 1 only matches once per sed invocation.
In your example, only the first file in the list will get edited.
You can complete your task with loop such as this:
grep -l 'hsv,vcv,tro,ztk' "${OUTPUT_DIR}/"*.csv |
while IFS= read -r file; do
sed -i '1d' "$file"
done
This might work for you (GNU sed and grep):
grep -l 'hsv,vcv,tro,ztk' ${OUTPUT_DIR}/*.csv | xargs sed -i '1d'
The -l ouputs the file names which are received as arguments for xargs.
The -i edits in place the file and removes the first line of each file.
N.B. The -i option in sed works at a per file level, to use line numbers for each file within a stream use the -s option.
The only solution that worked for me is this apart from the one posted by Dan above -
for k in $(grep -l 'hsv,vcv,tro,ztk' ${OUTPUT_DIR}/*.csv | tr -s "\n" " ")
do
/usr/bin/sed -i '1d' "${k}"
done
UPDATE : Still open for solutions using nslookup without parallel, dig or drill
I need to write a script that scans a file containing web page addresses on each line, and adds to these lines the IP address corresponding to the name using nslookup command. The script looks like this at the moment :
#!/usr/bin/
while read ip
do
nslookup "$ip" |
awk '/Name:/{val=$NF;flag=1;next} /Address:/ &&
flag{print val,$NF;val=""}' |
sed -n 'p;n'
done < is8.input
The input file contains the following websites :
www.edu.ro
vega.unitbv.ro
www.wikipedia.org
The final output should look like :
www.edu.ro 193.169.21.181
vega.unitbv.ro 193.254.231.35
www.wikipedia.org 91.198.174.192
The main problem i have with the current state of the script is that it takes the names from nslookup (which is good for www.edu.ro) instead of taking the aliases when those are available. My output looks like this:
www.edu.ro 193.169.21.181
etc.unitbv.ro 193.254.231.35
dyna.wikimedia.org 91.198.174.192
I was thinking about implementing a if-else for aliases but i don't know how to do one on the current command. Also the script can be changed if anyone has a better understanding of how to format nslookup to show it like the output given.
Minimalist workaround quasi-answer. Here's a one-liner replacement for the script using GNU parallel, host (less work to parse than nslookup), and sed:
parallel "host {} 2> /dev/null |
sed -n '/ has address /{s/.* /'{}' /p;q}'" < is8.input
...or using nslookup at the cost of added GNU sed complexity.
parallel "nslookup {} 2> /dev/null |
sed -n '/^A/{s/.* /'{}' /;T;p;q;}'" < is8.input
...or using xargs:
xargs -I '{}' sh -c \
"nslookup {} 2> /dev/null |
sed -n '/^A/{s/.* /'{}' /;T;p;q;}'" < is8.input
Output of any of those:
www.edu.ro 193.169.21.181
vega.unitbv.ro 193.254.231.35
www.wikipedia.org 208.80.154.224
Replace your complete nslookup line with:
echo "$IP $(dig +short "$IP" | grep -m 1 -E '^[0-9.]{7,15}$')"
This might work for you (GNU sed and host):
sed '/\S/{s#.*#host & | sed -n "/ has address/{s///p;q}"#e}' file
For all non-empty lines: invoke the host command on the supplied host name and pipe the results to another invocation of sed which strips out text and quits after the first result.
I'm trying to curl a list of URLs to aggregate the tabular data on them from a set of 7000+ URLs. The URLs are in a .txt file. My goal was to cURL each line and save them to a local folder after which I would grep and parse out the HTML tables.
Unfortunately, because of the format of the URLs in the file, duplicates exist (example.com/State/City.html. When I ran a short while loop, I got back fewer than 5500 files, so there are at least 1500 dupes in the list. As a result, I tried to grep the "/State/City.html" section of the URL and pipe it to sed to remove the / and substitute a hyphen to use with curl -O. cURL was trying to grab
Here's a sample of what I tried:
while read line
do
FILENAME=$(grep -o -E '\/[A-z]+\/[A-z]+\.htm' | sed 's/^\///' | sed 's/\//-/')
curl $line -o '$FILENAME'
done < source-url-file.txt
It feels like I'm missing something fairly straightforward. I've scanned the man page because I worried I had confused -o and -O which I used to do a lot.
When I run the loop in the terminal, the output is:
Warning: Failed to create the file State-City.htm
I think you dont need multitude seds and grep, just 1 sed should suffice
urls=$(echo -e 'example.com/s1/c1.html\nexample.com/s1/c2.html\nexample.com/s1/c1.html')
for u in $urls
do
FN=$(echo "$u" | sed -E 's/^(.*)\/([^\/]+)\/([^\/]+)$/\2-\3/')
if [[ ! -f "$FN" ]]
then
touch "$FN"
echo "$FN"
fi
done
This script should work and also take care of downloading same files multiple files.
just replace the touch command by your curl one
First: you didn't pass the url info to grep.
Second: try this line instead:
FILENAME=$(echo $line | egrep -o '\/[^\/]+\/[^\/]+\.html' | sed 's/^\///' | sed 's/\//-/')
Grep output is usually like this:
after/ftplugin/python.vim:49: setlocal number
Is it possible for me extract the file name and line number from this result using standard linux utilities ? Looking for a generic solution that works pretty well .
I can think of using awk to get the first string like :
Input
echo 'after/ftplugin/python.vim:49: setlocal number' | awk 'print $1'
'after/ftplugin/python.vim:49:'
$
Expected
after/ftplugin/python.vim and 49
Goal : Open in Vim
I am writing a small function that transforms the grep output to something vim can understand - mostly for academic purpose . I know there are thinks like Ack.vim out there which does something similar . What are the standard light weight utils out there ?
Edit: grep -n "text to find" file.ext |cut -f1 -d: seems to do it if you dont mind double parsing the string . Sed though needs to be used !
If you're using Bash you can do it this way:
IFS=: read FILE NUM __ < <(exec grep -Hn "string to find" file)
vim "+$NUM" "$FILE"
Or POSIX:
IFS=: read FILE NUM __ <<EOD
$(grep -Hn "string to find" file)
EOD
vim "+$NUM" "$FILE"
Style © konsolebox :)
This will do:
echo 'after/ftplugin/python.vim:49: setlocal number' | awk -F: '{print $1,"and",$2}'
after/ftplugin/python.vim and 49
But give us data before grep. It may be that we can cut it more down. No need for both grep and awk
If by "reverse parse" you mean you want to start from the end (and can safely assume that the file content contains no colons), parameter expansion makes that easy:
line='after/ftplugin/python.vim:49: setlocal number'
name_and_lineno=${line%:*}
name=${name_and_lineno%:*}
lineno=${name_and_lineno##*:}
Being all in-process (using shell built-in functionality), this is much faster than using external tools such as sed, awk, etc.
To connect it all together, consider a loop such as the following:
while read -r line; do
...
done < <(grep ...)
Now, to handle all possible filenames (including ones with colons) and all possible content (including strings with colons), you need a grep with GNU extensions:
while IFS='' read -u 4 -r -d '' file \
&& read -u 4 -r -d ':' lineno \
&& read -u 4 -r line; do
vim "+$lineno" "$file"
done 4< <(grep -HnZ -e "string to find" /dev/null file)
This works as follows:
Use grep -Z (a GNU extension) to terminate each filename with a NUL rather than a :
Use IFS='' read -r -d '' to read until the first NUL when reading filenames
Use read -r -d ':' lineno to read until a colon when reading line numbers
Read until the next newline when reading lines
Redirect contents on FD #4 to avoid overriding stdin, stdout or stderr (so vim will still work properly)
Use the -u 4 argument on all calls to read to handle contents from FD #4
How about this?:
echo 'after/ftplugin/python.vim:49: setlocal number' | cut -d: -f1-2 | sed -e 's/:/ and /'
Result:
after/ftplugin/python.vim and 49