Shell Programming and Scripting

#!/bin/bash

function do_work
{
        if [  -n "$user" ]
        then
            printf "\nTOP ANALYSIS REPORT\n"
            printf "\nName: %4s\n" $user

            if [ $pflag  ]; then        ###
                echo "-------------------------------------------------------------------------------------------------"
                printf "| %-15s | %-23s | %-10s | %-10s | %-10s | %-10s |\n" "USER" "PROCESS" "PROC ID" "% CPU" "% MEM" "PRIORITY"
                echo "|-----------------+-------------------------+------------+------------+------------+------------|"
                awk -F"," '/'$user'/ { printf "| %-15s | %-23s | %-10s | %-10s | %-10s | %-10s |\n", $2, $3, $1, $5, $6, $4 }' $file
                echo "-------------------------------------------------------------------------------------------------"
            else
                echo "------------------------------------------------------------------------------------"
                printf "| %-15s | %-23s | %-10s | %-10s | %-10s |\n" "USER" "PROCESS" "PROC ID" "% CPU" "% MEM"
                echo -e "|-----------------+-------------------------+------------+------------+------------|"
                awk -F"," '/'$user'/ { printf "| %-15s | %-23s | %-10s | %-10s | %-10s |\n", $2, $3, $1, $5, $6 }' $file
                echo -e "------------------------------------------------------------------------------------"
           fi
        fi

}
# ------------------------------------------------
resetTime=1
mytotalTime=0
totalHour=0
totalMin=0
averagemem=0
finalaverage=0
times=0
function usage
{
    cat << EOF
    USAGE: $0 [options] file
EOF
}

function usageOption
{
    cat << EOF
    $0 Must select report type: -u(ser) or -c(ommand)
EOF
}

function displayTime
{
    awk -F"," '/'$user'/{print $7}' $file > /tmp/mytotalTime.$USER
    cat /tmp/mytotalTime.$USER | while read resetTime;
    do
        Min=$(echo $resetTime | cut -d ":" -f2)
        Hour=$(echo $resetTime | cut -d ":" -f1)
        totalHour=$((totalHour+Hour))
        echo $totalHour > /tmp/totalHour.$USER
        totalMin=$(echo "($totalMin+$Min)" | bc)
        echo $totalMin > /tmp/totalMin.$USER
    done
    totalHour=$(cat /tmp/totalHour.$USER)
    totalMin=$(cat /tmp/totalMin.$USER)
    mytotalTime=$(echo "($totalHour*60+$totalMin)" | bc)
    totalHour=$(echo "($mytotalTime/60)" | bc)
    totalMin=$(echo "($mytotalTime%60)" | bc)
    echo -e "TOTAL RUNNING TIME:    " $totalHour":"$totalMin "\n"
}

if [ $# -eq 0 ]; then
    usage
    exit 1
fi

pflag=
user=""
command=
fileName=
totalTime=
memoryUse=
priority=
OPTIND=1    # Reset in case getopts has been used previously in the shell

while getopts "u:c:f:tmp" opt;do
 case $opt in
    u)    user=$OPTARG;[ OPTIND=${OPTIND} ];uflag=$user;;
    c)    mycommand=$OPTARG;[ OPTIND=${OPTIND} ]; echo $OPTIND;;
    f)    fileName=$OPTARG;echo "$fileName";[ OPTIND=${OPTIND} ]; echo $OPTIND;;
    t)    totalTime=$OPTARG;[ OPTIND=${OPTIND} ]; echo $OPTIND;;
    m)    memoryUse=$OPTARG;echo "$memoryUse";[ OPTIND=${OPTIND} ];;
    p)    pflag=1;  [ OPTIND=${OPTIND} ];;
    \?)    usage;exit 1;;
    *)        echo -e "\nOption -$OPTARG requires an argument.\n";exit 1;;
 esac
done
shift $(($OPTIND - 1))

# Check for proper number of command line args.
EXPECTED_ARGS=1
#E_BADARGS=65

if [ $# -ne $EXPECTED_ARGS ]; then
    usage
    exit 1
 #exit $E_BADARGS
fi

if [ -n "$user" ] && [ -n "$mycommand" ]; then
    usageOption
    exit 1

elif [ ! -f $1 ]; then
    usage
    exit 1
elif [ $# -ge 2 ]; then
    usage
    exit 1
elif [ -z "$user" ] && [ -z "$mycommand" ]; then
    usageOption
    exit 1
fi

file=$1

if [ -n "$fileName" ]
then
    do_work | tee $fileName
else
    do_work
fi