Retrieve file from list as nc input

Question

I'm trying to create a simple script (one liner, actually) that takes the content of the a file, makes it random, and provides the output to netcat as the connection destination.

This is what I thought was needed:

NCIP=$(sort --random-sort /root/list.csv | head -n 1) | nc -zv -w 2 $NCIP 443

My idea is to set the variable NCIP based on the output of sort and head, and have the nc command call it. For some reason, I can't seem to make this work.

Any pointers would be greatly appreciated.

Answer 1

You need either to

$ NCIP=$(sort --random-sort /root/list.csv | head -n 1) ; nc -zv -w 2 $NCIP 443

or

$ sort --random-sort /root/list.csv | head -n 1 | nc -zv -w 2 -p 443