sh stub for hp ux

#!/bin/sh
# file: sh_stub.sh
umask 000 ; 
# echo all the commands 
# debug 
set -x
# exit on single error
# debug 
set -e 


#
# read the IniFile, which is host dependant and set the variables
# report the set variables 
doSetVars(){
      MyDir=`dirname $0`
      cd $MyDir
      MyDir=`pwd`
      Tmp="$MyDir/tmp/tmp.$$"
      mkdir -p $Tmp           #create the tmp dir if it does not exist 
      set  >$Tmp/variables.before 
      MyName=`basename $0`
      # boom boom boom where does the ProductBaseDir start ?!
      for i in {1..5} ; do cd .. ;done ;
      ProductBaseDir=`pwd`
      cd $MyDir
      IniFile="$MyDir/$MyName.`hostname`.conf"
      IniSection=MainSection
      LogFile="$MyDir/$MyName.log"
      # get the machine / host specific configuration 
      doParseIniFile
      #source $0
      set > $Tmp/variables.after
      doLog " Using the following vars :"
      cmd="comm -13 $Tmp/variables.before $Tmp/variables.after"
      doRunCmdAndLog $cmd
      rm -f $Tmp/variables.before $Tmp/variables.after
      rm -f $Tmp/variables.before $Tmp/variables.before  
}
#eof function doSetVars

# parse the host dependant ini file
doParseIniFile(){
   eval `sed -e 's/[[:space:]]*\=[[:space:]]*/=/g' \
       -e 's/;.*$//' \
       -e 's/[[:space:]]*$//' \
       -e 's/^[[:space:]]*//' \
       -e "s/^\(.*\)=\([^\"']*\)$/\1=\"\2\"/" \
      < $IniFile \
       | sed -n -e "/^\[$IniSection\]/,/^\s*\[/{/^[^;].*\=.*/p;}"`
}
#eof function doParseIniFile


# call by doRunCmdAndLog $cmd
doRunCmdAndLog(){
            cmd="$*" ; 
            doLog "running cmd : \"$cmd\""
            Msg=$($cmd 2>&1)
            [ $? -eq 0 ]  || doLog "ERROR : Failed to run the following command \"$cmd\" with the following output \"$Msg\" !!!"
            doLog " DEBUG : cmdoutput : \"$Msg\""
}
#eof function doRunCmdAndLog


#call by doRunCmdOrExit $cmd
doRunCmdOrExit(){
            cmd="$*" ; 
            doLog "running cmd : \"$cmd\""
            Msg=$($cmd 2>&1)
            # if error occured during the execution exit with error
            [ $? -eq 0 ] || doExit "ERROR : FATAL : Failed to run the following command \"$cmd\" with the following output \"$Msg\" !!!"
            #if no error occured just log the message
            doLog " DEBUG : cmdoutput : \"$Msg\""
}
#eof function doRunCmdOrExit

# echo passed params and print them to a log file and to the screen
# with a nice date the the current process id
doLog(){
      # check terminal if exists echo 
      test -t 1 && echo "`date +%Y.%m.%d-%H:%M:%S` [$$] @`hostname` $*"
      # check LogFile and 
      test -z $LogFile || {
        echo "`date +%Y.%m.%d-%H:%M:%S` [$$] @`hostname` $*" >> $LogFile
      } #eof test
 } 
# eof function doLog 


#
# exit with passed status and message
doExit(){

      ExitStatus=0
      case $1 in
         [0-9]) ExitStatus="$1"; shift 1;;
   esac
      Msg="$*"
      test "$ExitStatus" = "0" || Msg="ERROR: $Msg"
      doLog "$Msg"
      
      exit $ExitStatus
}
#eof function Exit


#
# the actions to be performed befor the run 
doCleanBeforeRun(){

   doLog "DEBUG START function ====== doCleanBeforeRun"   
   #get the PID of the previous run pid
   test -f "$MyDir/PID" && PreviousRunPID=`cat $MyDir/PID`
   test -f "$MyDir/PID" && kill -s 9 "$PreviousRunPID"
   # set the PID of the current process
   echo "$$" > "$MyDir/PID"

doLog "DEBUG STOP function ====== doCleanBeforeRun"   
}
#eof function doCleanBeforeRun

#
# Provide here a description of this function what is does etc 
doFunctionName(){
   doLog "DEBUG START function ====== doFunctionName"   

   # add here custom logic 
   
   doLog "DEBUG STOP function ====== doFunctionName"   
}



doCleanAfterRun(){

   doLog "DEBUG START function ====== doCleanAfterRun"
   #if the PID file exists remove it
   test -f "$MyDir/PID" && rm -f "$MyDir/PID"
   # set the PID of the current process
   doLog "DEBUG STOP function ====== doCleanAfterRun"
   
}
#eof function doCleanBeforeRun

#
# kills earlier instances of this script if they are running
# by using the base name of the script 
doKillOlderMeIfRunning(){

   doLog "DEBUG START function ======= doKillOlderMeIfRunning "
   
   # kill a process by name 
   ProcNameToKill=$MyName
   OLD_PIDs=$(ps -ef | grep $ProcNameToKill | grep -v "grep $ProcNameToKill" | perl -ne 'split /\s+/;print "$_[2] "| sort -n')
   
   doLog "OLD_PIDs is $OLD_PIDs"
   for OLD_PID in `echo "$OLD_PIDs"`
      do 
         [ $OLD_PID -ne $$ ] && doLog "OLD_PID : $OLD_PID running -> has to be shutdown "
         cmd="kill -s 9 $OLD_PID"
         [ $OLD_PID -ne $$ ] && doRunCmdAndLog "$cmd"
      done 

   ps -ef | grep "$ProcNameToKill"  | grep -v "grep $ProcNameToKill"

   #check the running left processes
   cmd="ps -ef | grep \"$ProcNameToKill\"  | grep -v \"grep $ProcNameToKill\""
   #doRunCmdAndLog $cmd
  
   doLog "DEBUG STOP function ======= doKillOlderMeIfRunning "
}
#eof function doKillOlderMeIfRunning

#
# sends an e-mail with the latest n configured lines from the log 
doSendReport(){
      doLog "DEBUG START function ======= doSendReport"
      
      for Email in $Emails
         do 
            tail -n $NumberOfLinesFromLogFileToReport $LogFile | mailx -s "tail -n $NumberOfLinesFromLogFileToReport $LogFile" $Email        
         done
      doLog "DEBUG STOP ======= doSendReport"
}
#eof function doSendReport


# the main function called 
main(){
   doSetVars
   doKillOlderMeIfRunning
   doCleanBeforeRun
   doFunctionName
   doCleanAfterRun
   doSendReport
   doExit 0 " STOP MAIN "
}
#eof function main

# Action !!!
main


# Purpose:
#  to provifde a basic stub / template sh to start development from on HP-UX  
#  
#  has the following features: 
# - prints the set in the script variables
# - separation of host specific vars into $0.`hostname`.conf file
# - doLog function for both xterm and log file printing 
# - killing of older instances  
# Prerequisites: 
# HP-UX B.11.31 U ia64
# sh , perl , sed , grep 
# VersionHistory : 
# 1.1.0 ---  2012-06-18 12:00:15 --- Yordan Georgiev ---  doMethodName + utility methods 
# 1.0.0 ---  2012-06-15 08:40:35 --- Yordan Georgiev --- Initial version 
#
# EOF File:sh_stub.sh

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