Shell Programming and Scripting

1,root,init,20,0.0,0.1,0:01.78
1008,root,migration/0,1,2.0,1.8,7:04.32
5,root,watchdog/0,1,0.0,0.0,0:00.00

while getopts ":u:c:f:tmp" opt;do
 case $opt in
        u)      user=$OPTARG;awk '/'$user'/{FS=","; print}' < $(($OPTIND + 1));;
        c)      command=$OPTARG;;
        f)      fileName=$OPTARG;;
        t)      totalTime=$OPTARG;;
        m)      memoryUse=$OPTARG;;
        p)      priority=$OPTARG exit;;
        \?)     usage;exit 1;;
        *)      echo "Option -$OPTARG requires an argument.";exit 1;;
 esac
done
shift $(($OPTIND - 1))

while IFS="," read field1 field2 field3 field4 ...
do
  ....
done < infile

#!/bin/bash
# Argument = -t test -r server -p password -v
# Argument = -h

function usage()
{
cat << EOF
usage: $0 options

OPTIONS:
   -h      Show this message
   -t      Test type, can be 'test1' or 'test2'
   -r      Server address
   -p      Server root password
   -v      Verbose
EOF
}

theTest=
theServer=
thePassword=
verbose=
while getopts ":hvt:r:p:" x
do
     case $x in
         h)
             usage
             exit 1
             ;;
         t)
             theTest=$OPTARG
             ;;
         r)
             theServer=$OPTARG
             ;;
         p)
             thePassword=$OPTARG
             ;;
         v)
             verbose=1
             ;;
         ?)
             usage
             exit
             ;;
     esac
done

if [[ -z $theTest ]] || [[ -z $theServer ]] || [[ -z $thePassword ]]
then
     usage
     exit 1
fi
if [ "$verbose" != "" ]; then
    echo Here are the options
    echo "the value for -t is $theTest"
    echo "the value for -r is $theServer"
    echo "the value for -p is $thePassword"
fi
echo "the value for -v is $verbose"

while IFS="," read field1 field2 field3 field4 ...
do
  ....
done < "$fileName"

shift $(($OPTIND - 1))