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Call single function multiple times diff set of parameters

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# 1  
Old 08-04-2009
Call single function multiple times diff set of parameters
Okay, not sure if it can be done, I would think it could be done and I'm just having a hard time with it.

Code:
fun_close_wait(){
ipVar="${1} ${2}"
portVar=`cat "${5}" | cut -d' ' -f 1`
for ip in $ipVar
do
        for port in $portVar
        do

                netstatVar=`netstat -n | grep CLOSE_WAIT | grep "${ip}:${port}" | wc -l`
                        if [[ -n "${ip}" && ${ip} == "$1" ]]
                                then
                                        echo `hostname`-"${3}"-`cat "${5}" | grep "${port}" | cut -d' ' -f 2`-${netstatVar}
                                        elif [[ -n "${ip}" && ${ip} == "$2" ]]
                                                then
                                                echo `hostname`-"${4}"-`cat "${5}" | grep "${port}" | cut -d' ' -f 2`-${netstatVar}
                                        else
                                                echo `hostname`-"${ip}"-`cat "${5}" | grep "${port}" | cut -d' ' -f 2`-${netstatVar}

                        fi
        done
done
exit
}
fun_close_wait 11.11.111.11 22.22.222.22 server1 server2 first-port-list-file
fun_close_wait 33.33.333.33 44.44.444.44 server 3 server4 second-port-list-file

Right now, it seems to run through the first function, but once it gets to the second function it doesn't run through it. To test it I commented out the first function call and it runs just fine, so both function call's work and the script does what it's intended to do, only when I try to call the function twice is where I get the issue.

in the port list files it's just a flat file like the following:

Code:
1111 instance1
2222 instance2
3333 instance3
4444 instance4
5555 instance5

# 2  
Old 08-04-2009
I haven't traced through this, but if this is a copy and paste:

fun_close_wait 11.11.111.11 22.22.222.22 server1 server2 first-port-list-file
fun_close_wait 33.33.333.33 44.44.444.44 server 3 server4 second-port-list-file

then those two calls don't have the same number of arguments. It looks like "server 3" should be "server3" in the second line.
# 3  
Old 08-04-2009
Looks like you may have the same problem as the guy here: https://www.unix.com/shell-programmin...ubroutine.html

You have an exit command at the end of your function so I don't see how you'd even be able to run though it twice but that's neither here nor there. Try adding the following line:

Code:
OPTIND=1

between your final "done" and "exit"
# 4  
Old 08-05-2009
Quote:
Originally Posted by kodak
I haven't traced through this, but if this is a copy and paste:

fun_close_wait 11.11.111.11 22.22.222.22 server1 server2 first-port-list-file
fun_close_wait 33.33.333.33 44.44.444.44 server 3 server4 second-port-list-file

then those two calls don't have the same number of arguments. It looks like "server 3" should be "server3" in the second line.
That's a typo when I took out the actual IP's and server names. In the actual code they have the same number of arguments.

---------- Post updated at 08:28 AM ---------- Previous update was at 08:26 AM ----------
Quote:
Originally Posted by mglenney
Looks like you may have the same problem as the guy here: https://www.unix.com/shell-programmin...ubroutine.html

You have an exit command at the end of your function so I don't see how you'd even be able to run though it twice but that's neither here nor there. Try adding the following line:

Code:
OPTIND=1

between your final "done" and "exit"
Taking the exit out and putting it after the function calls worked.

I originally created this w/o it being a function, and decided it'd be easier for me to use multiple function calls inside a single script, rather than passing multiple parameters from outside, and forgot to take out the exit line.
# 5  
Old 08-05-2009
exit will exit the script even it's in function. If you need to make "exit" in function = interrupt function, then use return in function like you use exit.
Code:
function some
{
    [ "$#" -lt 2 ] && return 1
    do_something
    # you can say return, but it has done automatic also
}

#main

# calling function = calling command = calling alias = ...
some arg1
$stat=$?   # look exit code of some, in this case function return code
echo "some exit status $stat"

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