HP-UX FIN_WAIT_2 제거 script

hp-ux 에서 FIN_WAIT_2 가 발생해 제거가 않될경우 제거해주는 script 입니다.

#!/bin/ksh 

# Hewlett-Packard Corporation 

# This script is UNSUPPORTED.  Use at own risk. 

# @(#)$Revision: 1.3 $   $Author: scotty $   $Date: 98/08/25 17:55:01 $ 

# 

# This script will query the system for any TCP connections that 

# are in the FIN_WAIT_1 state and forcibly disconnect them.  It 

# uses netstat(1) to find the FIN_WAIT_1 connections and calls 

# ndd with the correct hexidecimal representation of the connection 

# to close the connection. 

# 

# 

# Temporary files used to compare netstat output 

# 

MYSCRIPTNAME=${0##*/} 

TMPFILE1=/tmp/hp/$MYSCRIPTNAME.1 

TMPFILE2=/tmp/hp/$MYSCRIPTNAME.2 

PORTNUM=$1

# 

# Create a log file to keep track of connection that were removed 

# 

LOGFILE=/tmp/hp/$MYSCRIPTNAME.log 

function getFinWait2 { 

/usr/bin/printf "%.2x%.2x%.2x%.2x%.4x%.2x%.2x%.2x%.2x%.4x\n" `/usr/bin/netstat -an -f inet | /usr/bin/grep FIN_WAIT_2 |/usr/bin/grep $PORTNUM| /usr/bin/awk '{print $4,$5}' | /usr/bin/sed 's/\./ /g'` > $TMPFILE1

} 

function compareFinWait2 { 

FIRST_TIME=1 

cp $TMPFILE1 $TMPFILE2 

getFinWait1 

comm -12 $TMPFILE1 $TMPFILE2 > $PWD/fin_wait_list

while read CONN 

do 

        echo $CONN

        if [[ $CONN != "000000000000000000000000" ]] 

        then 

                if [ $FIRST_TIME -eq 1 ] 

                then 

                        print >> $LOGFILE 

                        date >> $LOGFILE 

                        FIRST_TIME=0 

                fi 

                print "/usr/bin/ndd -set /dev/tcp tcp_discon_by_addr \"$CONN\"" >> $LOGFILE

                /usr/bin/ndd -set /dev/tcp tcp_discon_by_addr $CONN 

        fi 

done < fin_wait_list

getFinWait2 

} 

# 

# Main 

# 

touch $TMPFILE1 

touch $TMPFILE2 

compareFinWait2