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Top Forums Shell Programming and Scripting Output Multiple Files in the For Loop Post 302973037 by alvinoo on Friday 13th of May 2016 05:23:05 AM
Old 05-13-2016
Output Multiple Files in the For Loop

Code:
while IFS= read -r line
do
# sV for version detection
	nmap -T4 -Pn -v -sS "$line" > "text/$line"
done < <(grep '' $file)

Hi,
where
Code:
line

represents the IP.

I am using NMAP to do scanning.

How can I set to execute that command in the loop several concurrently at a time instead of one at a time.
 

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line(1)                                                            User Commands                                                           line(1)

NAME
line - read one line SYNOPSIS
line DESCRIPTION
The line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal. EXIT STATUS
Exit status is: 0 Successful completion >0 End-of-file on input. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), read(2), attributes(5) SunOS 5.10 1 Feb 1995 line(1)
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