UNIX for Advanced & Expert Users

#!/bin/ksh
LOG_FILE=/tmp/${0##*/}.log

LogMsg() {
 print "$(date +%d/%m/%y:%H:%M:%S) : $@"  >> $LOG_FILE
}

CallA() {
 LogMsg "Calling Function A"
 iostat 5 5  >> $LOG_FILE &
 wait $!
 LogMsg "A done with $!"
 return 45
}

CallB() {
 LogMsg "Calling Function B"
 vmstat 5 5  >> $LOG_FILE &
 wait $!
 LogMsg "B done with $!"
 return 46
}

Main() {
 LogMsg "Starting the Process - Main"
 CallA
 Ret=$?
 LogMsg " Returned value $Ret "
 CallB
 Ret=$?
 LogMsg " Returned value $Ret "
}

# Call the Main Function here
Main