Solved

Script to check netstat connections

Posted on 2003-11-20
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Last Modified: 2013-12-26
I have a script, this script check SMPP connection over Port 6200, if I check netstat|grep smpp,
i can see IP ADD connected and UP.

I create a IP_ADD.txt, in order to list  IP Add I need realy check: i.e.

Please review my script and helpme to get a EXCELENTE script.


path=$HOME/Alex
AL=10.2.78.36      # PC Alex
date=`date -u`
arriba=1

while [ $arriba ]
 do
      a=`netstat | grep smpp | grep $SERVER | grep ESTABLISHED`

#subrutina que lee linea por linea un archivo
mylinea ()
  { while read myline
        do
          SERVER=`echo ${myline} | cut -f1 -d","`
          SERVER_INF=`echo ${myline}`
        done
  } < ./ip_add.txt

      if [ $arriba -eq "1" ]
         then
               if [ -z "$a" ]
                 then
                  MSG="SMSC: '$SERVER_INF' is DOWN"
                  for MOBILE in `cat $path/mobiles.txt`
                    do
                    print "submit\n$MOBILE\n\n5710000001\n\n\n\n\n1\n\n\n\n\n\n\n$MSG\ny\nexit\
n\" | sms_operator > /dev/null 2>&1
                    sleep 1
                    done
                  echo "`date` $MSG" >> $path/NetLogChk
                  arriba=1
          if [ $arriba -eq "0" ]
           then
                if [ -n $a ]
                 then
                  MSGS="SMSC: '$SERVER_INF' is UP"
                  for MOBILE in `cat $path/mobiles.txt`
                  do
                  print "submit\n$MOBILE\n\n5710000001\n\n\n\n\n1n\n\n\n\n\n\n$MSGS\ny\nexit\n
\" | sms_operator > /dev/null 2>&1
                  sleep 1
                  done
                  echo "`date` $MSGS" >> $path/NetLogChk
                  arriba=0
                fi
        fi
        sleep 1
done
0
Comment
Question by:aorodrig
  • 10
  • 5
  • 4
  • +2
23 Comments
 
LVL 9

Expert Comment

by:HamdyHassan
ID: 9791136
What is the content of IP_ADD.txt ?

Please post the following
$ cat IP_ADD.txt


Also Does this script is working already, or you still developing...etc
0
 
LVL 38

Accepted Solution

by:
yuzh earned 250 total points
ID: 9792162
When you read a file in a script, you should use the FULL PATH to the file.

use:  /path-to/ip_add.txt instead of ./ip_add.txt

./ip_add.txt only work when you start the script in the same dir as ip_add.txt !


You could also use:

IPADD=/path-to/ip_add.txt

#Function
mylinea ()
{
exec 0 <$IPADD
while read myline
       do
         SERVER=`echo ${myline} | cut -f1 -d","`
         SERVER_INF=`echo ${myline}`
       done
}

if you need more help, please post the format of ip_add.txt
0
 

Author Comment

by:aorodrig
ID: 9797197
This is CAT of IP_ADD.TXT

192.168.28.2 , VoiceMail
192.168.32.3 , Avisor Internet SMS Comtor
192.168.32.4 , Avisor Cita
172.28.3.10 , Avisor Operadora Teledatos
172.28.3.11 , Avisor Operadora Teledatos
198.247.170.47 , Inalambria Swireless
10.2.78.36 , PC Alex
0
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Author Comment

by:aorodrig
ID: 9797266
Note I need a dynamic script in order to check a IP add connection and if exist a problem send a short messages to mobile list, and continue reviewing next IP add in IPADD.txt.... this is a loop....
0
 

Author Comment

by:aorodrig
ID: 9797312
I have another issue when ARRIBA flag change from DOWN to UP, dont send short messages.  Why, may be I have problems with flags or logical states, where
0
 
LVL 9

Expert Comment

by:HamdyHassan
ID: 9797407
It looks like you have a lot of issues.

Please try what yuzh said, and keep us updated.

0
 

Author Comment

by:aorodrig
ID: 9797789
I change my function into myscript, but variable SERVER dont get properly.

Its possible get other solution or other script?
0
 
LVL 51

Assisted Solution

by:ahoffmann
ahoffmann earned 250 total points
ID: 9799812
1. variable SERVER not set before first use
2. definition of function within other shell code

think this is what yuzh already suggested

> Its possible get other solution or other script?
yes as much as you can imagine
pero no tengo idea qué shell es preferado
;-)
0
 

Author Comment

by:aorodrig
ID: 9799897
I work in KSH, I has changed myscript, this version its works.  but have some problems with ARRIBA variable.

#''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''#

path=$HOME/Alex
path2=$HOME/Alex/ip_add.txt
date=`date -u`
arriba=1 export arriba

while [ $arriba ]
 do

i=0 export i
while IFS=',' read ip buf
do
  i=`expr $i + 1`
  echo " ALL file $i ($ip , $buf)"
  SERVER=$ip
  SERVINF="$ip $buf"
  arriba=`expr $arriba`
  a=`netstat | grep smpp | grep $SERVER | grep ESTABLISHED`

      if [ $arriba -eq 1 ]
         then
               if [ -z "$a" ]
                 then
                  MSG="SMSC::SMPP '($SERVINF)' is DOWN"
                  for MOBILE in `cat $path/mobiles.txt`
                    do
                    print "submit\n$MOBILE\n\n5710000001\n\n\n\n\n1\n\n\n\n\n\n\n$MSG\ny\nexit\
n\" | sms_operator > /dev/null 2>&1
                    sleep 1
                    done
                  echo "`date` $MSG" >> $path/NetLogChk
                  arriba=0
          if [ $arriba -eq 0 ]
           then
                if [ -n $a ]
                 then
                  MSGS="SMSC::SMPP '($SERVINF)' is UP"
                  for MOBILE in `cat $path/mobiles.txt`
                  do
                  print "submit\n$MOBILE\n\n5710000001\n\n\n\n\n1\n\n\n\n\n\n\n$MSGS\ny\nexit\n
\" | sms_operator > /dev/null 2>&1
                  sleep 1
                  done
                  echo "`date` $MSGS" >> $path/NetLogChk
                  arriba=1
                fi
        fi
        sleep 1
done < $path2
done
0
 

Author Comment

by:aorodrig
ID: 9799909
And when i need wite log file  $path/NetLogChk its only print date and i need add $MSG, why dont work?
0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 9800172
> arriba=1 export arriba
this is wrong syntax, even in ksh
either use
  arriba=1
  export arriba
or omit the export ('cause you don't need it, did you?)

> .. why dont work?
see:
  arriba=0
  if [ $arriba -eq 0 ]
     then
what should this do, you can omit the if clause
0
 

Author Comment

by:aorodrig
ID: 9800364
If arriba=0 must check connection until it connect again and netstat|grep be noequal to 0, then perform print and send short messages and change arriba to 1,  but dont work.

Other question, when I want write NetLog File, only print date and dont MSG variable, why?
0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 9800498
>  dont MSG variable, why?
your code looks ok, but which of the echo commands does not work?
Start the script with the -x option to see what's going on ..
0
 

Author Comment

by:aorodrig
ID: 9800558
loohs sx -x

+ print submit\n5715851388\n\n5710000001\n\n\n\n\n1\n\n\n\n\n\n\nSMSC::SMPP '(10.2.78.36   PC A
lex)' is DOWN\ny\nexit\n" | sms_operator > /dev/null 2>&1
                    sleep 1
                    done
                  echo Fri Nov 21 17:38:01 EST 2003 SMSC::SMPP '(10.2.78.36 PC Alex)' is DOWN >
> /usr/EBS/ADCSoftware/smsadm/Alex/NetLogChk
                  arriba=0

and tail NetLog file

Fri Nov 21 15:33:22 EST 2003
Fri Nov 21 16:01:00 EST 2003
Fri Nov 21 16:01:29 EST 2003
Fri Nov 21 17:38:02 EST 2003

Only print date but didnot date + messages

and arriba change to 0 but dont continue with normal sequence, why?
0
 
LVL 38

Expert Comment

by:yuzh
ID: 9801866
You need to fix a few syntax problems and test it again:

1). as ahoffmann already pointed out:

arriba=1 export arriba
i=0 export i

are wrong !

for ksh, you can use:
export arriba=1

or (this will work for sh/ksh/bash)
arriba=1
export arriba

2) path=$HOME/Alex, will cause some kind of confusion with
ENV var $path, consider change to:

fpath=$HOME/Alex

3) while IFS=',' read ip buf ; do

    change it  to:
    IFS=','
    while read ip buf ;  do

fix up the systax, and then run it in debug more. (put "set -x" in beginning
of your script)


eg:
#!/bin/ksh
set -x

# the body of the script

....




0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 9802222
you're using 2 variables: MSG and MSGS
which one is missing?
And again, first fix your syntax problems !
0
 

Author Comment

by:aorodrig
ID: 9811950
OK I fix parameteres and MSGS varable is not working, when script check IP is UP or connected, this part of myscript dont change variable ARRIBA and dont sens sms.

I has changed path varable but dont writte in LOG FILE.  Only date.
0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 9812031
use -x option in hashbang line, or set -x
then check what realy happens, probably post relevant output ..
0
 
LVL 38

Expert Comment

by:yuzh
ID: 9815947
Please post the newer version of the script, and add

set -x
after the first line of the script, make it looks like:

#!/bin/ksh
set -x

# the body of the script

....


then run it, and post the out put on your screen.

0
 

Author Comment

by:aorodrig
ID: 9818319
set -x
path1=$HOME/Alex
path2=$HOME/Alex/ip_add.txt
date=`date -u`
arriba=1

while [ $arriba ]
 do

i=0 export i
while IFS=',' read ip buf
do
  i=`expr $i + 1`
  echo " ALL file $i ($ip , $buf)"
  SERVER=$ip
  SERVINF="$ip $buf"
#  arriba=`expr $arriba`
  a=`netstat | grep smpp | grep $SERVER | grep ESTABLISHED`

      if [ $arriba -eq 1 ]
         then
               if [ -z "$a" ]
                 then
                  MSG="SMSC::SMPP '($SERVINF)' is DOWN"
                  for MOBILE in `cat $path1/mobiles.txt`
                    do
                    print "submit\n$MOBILE\n\n5710000001\n\n\n\n\n1\n\n\n\n\n\n\n$MSG\ny\nexit\
n\" | sms_operator > /dev/null 2>&1
                    sleep 1
                    done
                  echo "`date` $MSG" >> $path1/NetLogChk
                  arriba=0
                fi
       fi
          if [ $arriba -eq 0 ]
           then
                if [ -n "$a" ]
                 then
                  MSGS="SMSC::SMPP '($SERVINF)' is UP"
                  for MOBILE in `cat $path1/mobiles.txt`
                  do
                  print "submit\n$MOBILE\n\n5710000001\n\n\n\n\n1\n\n\n\n\n\n\n$MSGS\ny\nexit\n
\" | sms_operator > /dev/null 2>&1
                  sleep 1
                  done
                  echo "`date` $MSGS" >> $path1/NetLogChk
                  arriba=1
                fi
        fi
        sleep 1
done < $path2
done

0
 
LVL 38

Expert Comment

by:yuzh
ID: 9818542
I just wonder did you read our comments at all?

We alread told you:

"i=0 export i" is WRONG !!!

in your case, you don't need to "export". please read all the comments
carefully,  fix the syntax and try again.


0
 
LVL 18

Expert Comment

by:liddler
ID: 10191763
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

Points split  yuzh & ahoffmann

Please leave any comments here within the next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

liddler
EE Cleanup Volunteer
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