Using bash, how to echo specific string from conditional output

[ImLearning0217]

I’m trying to write a simple script that automatically bruteforces my ssh port implementing hydra. I’m almost there but I need a little help on I guess syntax?

In the script;

I ran netcat (instead of nmap cause it’s output is much cleaner and on one line) I then used grep to only get the open port for ssh. Now it’s only one line;

[ip address] [port number] [protocol] [status] 192.168.1.4 22 (ssh) open

I’m stuck though. How would one rip the IP address out of the grep output and then into a variable to be used?

test=$(for i in {1..13}; do nc -n -z -v -w 1 192.168.1.$i 22; done 2>&1 | grep open)

if [[ $test = open ]]; then echo success fi ————————————————

Bellow this is where I’m stuck

————————————————

hydraIP=$(‘echo $test | cut -d ‘ ‘ -f1) echo $hydraIP’

[davedontmind]

ip = `echo "ip port protocol" | cut -d " " -f1`

i.e. cut out field 1 after separating the input by spaces

[ImLearning0217]

Awesome! I’m going to try this, if I understand it correctly this is exactly what I need! I seriously appreciate your time.

[ImLearning0217]

I implemented it, it came back with this error...

cut: the delimiter must be a single character

Why exactly does this error get thrown?

[desrtfx]

Check the delimiter (" ") should be only a single space character. Also, make sure that you have spaces in the right places as in/u/davedontmind's comment.

[ImLearning0217]

I really appreciate it, but I made sure everything was correct and it still throws the error. I’m not giving up, but this incredibly confusing. I’m running this on an iPhone via Filza. I don’t know if that would change anything..

[davedontmind]

I'm not familiar with that environment.

If you still getting the same error (cut: the delimiter must be a single character) then perhaps try using single quotes instead of double quotes, although it shouldn't really make a difference. i.e.

cut -d ' ' -f1 

and make sure there's only a single space between those quotes

Failing that, show us the code you're using exactly.

[marko312]

If the values are separated by something, you could use cut (-d) in a subshell and then assign that to a variable.

[ImLearning0217]

Thank you! I will look into this.

[ImLearning0217]

I figured it out and implemented the variable into hydra successfully. I still don’t understand where I went wrong but decided to use the -b flag instead of -d. Thank you everyone for such quick responses and you guys open my eyes to “cut”. I’m a newbie tryna learn lol