How to pass port no. to script? [Solved]

[jafadmin]

I wrote a script called "listenon" which calls nc and listens on a specified port and invokes another script called "listener" which sends a connect message to the client until killed. The problem is that I can't seem to pass the port number to the "listener" script.

I know I'm goofing something up. See below.

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#!/bin/sh
#
#  start nc and listen on port number from command line
#   uses the "listener" script to generate output.
#
PortNum=$1
printf "\n\tListening on port %d\n" "$PortNum"

#nc -l -p $PortNum -e listener						#This works
nc -l -p $PortNum -e "listener $PortNum"	#This doesn't

printf "\n\tClosing port %d\n\n" "$PortNum"

Thanks

[L18L]

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#nc -l -p $PortNum -e listener						#This works
nc -l -p $PortNum -e "listener $PortNum"	#This doesn't

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nc -l -p $PortNum -e listener $PortNum

What about this

[Karl Godt]

Or this :

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nc -l -p "$PortNum" -e listener "$PortNum"

Note : "listener $PortNum" would get passed as first argument , thus makes the second missing .
This would create two unknown/error events : Unknown argument "listener 12345" and missing PortNum .

[jafadmin]

Huh. Both of those worked. I could swear I tried just exactly that though and it failed. I tried so many different ways it's hard to remember...

Thank you guys very much. Here's the listener:

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#!/bin/sh
#
#  A simple listener for use with netcat
#
# nc -l -p [PortNumber] -e listener $PortNumber
#
Counter1=1
printf "\n"
while :
do
    printf "\t\tYes, I am listening on port %d. [%d]\n" "$1" "$Counter1" 

    read -t 5 -s  -n 1 key
    
    Counter1=`expr $Counter1 + 1`

    if [[ $key = q ]]
    then
        break
    fi
done

printf "\n\t\tQuit was pressed. Exiting ...\n\n"