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Slow Script Execution.

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# 15  
Old 06-22-2011
Quote:
Originally Posted by mohtashims
Let me know if i missed anything.
Again, the $1's inside awk have nothing to do with the $1's in your shell. They're in single quotes.

Code:
 echo '$1'
$1

So you're feeding a literal $1 into awk, not the script's first parameter, and don't need to change it to $2 to avoid your $1. Awk understands $1 as "the first token in the record".
# 16  
Old 06-22-2011
It does not work with $1 either.

Yes, because this is what i actually do inside the original script that i am trying to incorporate this into.

nettest.sh

Code:
#!/bin/ksh
echo "Your PID is $1"
free=`netstat -an -f inet | awk '
$1 ~ /\.[0-9]+$/ { p = $1
        while (i = index(p, ".")) p = substr(p, i+1)
        if (0+p >= 32768) a[0+p] = 1 }
/SCTP/ { for (p in a) count++
        print 32768 - count }'`
echo Free ports $free
echo "Your PID is $1"


output:
./"nettest.sh" 4456
Your PID is 4456
Free ports
Your PID is 4456[/CODE]

I hope I am able to cascade correctly what I am trying to do.
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!
Last edited by mohtashims; 06-22-2011 at 03:59 PM.. Reason: once again - please use code tags!
# 17  
Old 06-22-2011
OK maybe I was incorrect in removing the END {} block. Maybe your netstat doesn't have SCTP as mine does. But we'll keep it in there just in case, since i dont use solaris and am unsure if that section comes and goes. heh.

Code:
free=`netstat -an -f inet | awk '
$1 ~ /\.[0-9]+$/ { p = $1
        while (i = index(p, ".")) p = substr(p, i+1)
        if (0+p >= 32768) a[0+p] = 1 }
$1 ~ /SCTP/ { exit }
END { for (p in a) count++
        print 32768 - count }'`

echo Free ports $free

This User Gave Thanks to neutronscott For This Post:
mohtashims
# 18  
Old 06-22-2011
Hi,

This is what I see with the lastest you shared.
Code:
echo "Your PID is $1"
free=`netstat -an -f inet | awk '
$1 ~ /\.[0-9]+$/ { p = $1
        while (i = index(p, ".")) p = substr(p, i+1)
        if (0+p >= 32768) a[0+p] = 1 }
$1 ~ /SCTP/ { exit }
END { for (p in a) count++
        print 32768 - count }'`
echo Free ports $free
echo "Your PID is $1"

 
./"nettest.sh" 4456
Your PID is 4456
Free ports 0
Your PID is 4456

The output is "Free ports 0" even if i don't read my PID using $1.
Last edited by Scott; 06-22-2011 at 03:41 PM.. Reason: Code tags
# 19  
Old 06-22-2011
How about you post what your netstat output looks like so us blind men can stop bothering this elephant?
# 20  
Old 06-22-2011
Here you go:
Code:
bash$> netstat -an -f inet
UDP: IPv4
Local Address Remote Address State
-------------------- -------------------- ----------
*.40473 Idle
*.41371 Idle
*.36689 Idle
*.61401 Idle
*.41391 Idle
*.111 Idle
*.* Unbound
*.33067 Idle
*.46783 Idle
*.* Unbound
*.33072 Idle
 
and so on .... scrolling down the line i see
 
*.45175 Idle
*.34185 Idle
TCP: IPv4
Local Address Remote Address Swind Send-Q Rwind Recv-Q State
-------------------- -------------------- ----- ------ ----- ------ -----------
169.81.183.182.58316 169.81.183.188.10055 263536 0 263536 0 CLOSE_WAIT
169.81.183.182.57926 169.81.183.188.10055 263536 0 263536 0 CLOSE_WAIT
169.81.183.182.56846 169.81.183.188.10055 263536 0 263536 0 CLOSE_WAIT
169.81.183.182.55769 169.81.183.188.10055 263536 0 263536 0 CLOSE_WAIT

FYI... the initial script you shared did work.
Code:
#!/bin/sh
netstat -an -f inet | awk '
$1 ~ /\.[0-9]+$/ { p = $1
        while (i = index(p, ".")) p = substr(p, i+1)
        if (0+p >= 32768) a[0+p] = 1 }
/SCTP/ { exit }
END { for (p in a) count++
        print "Ports in use: " count "  Free: " 32768 - count }'

Last edited by Scott; 06-22-2011 at 03:43 PM.. Reason: Code tags
# 21  
Old 06-22-2011
Maybe it's just /bin/sh vs /bin/ksh. It works both ways for me. This is my test system:

Code:
[mute@sunny ~]$ uname -a
SunOS sunny 5.10 Generic_141444-09 sun4u sparc SUNW,Sun-Blade-100

I really don't know the matter at the moment. I prefer using bash for everything. Start it with bash, maybe try a printf instead... I dunno.

Code:
#!/bin/bash
free=`netstat -an -f inet | awk '
$1 ~ /\.[0-9]+$/ { p = $1
        while (i = index(p, ".")) p = substr(p, i+1)
        if (0+p >= 32768) a[0+p] = 1 }
$1 ~ /SCTP/ { exit }
END { for (p in a) count++
        printf("%d", 32768 - count) }'`

echo Free ports $free

Otherwise maybe someone else can pick this up. I'll be unable to for the next couple hours.
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