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# 1  
Old 03-02-2010
net help with getopts
Hi

I have written the following script.
But the variable sid is not getting set why is that.

When i run the script i get the output as

ORATAB FOR is

Instead if i run the script like

test.sh xiamin

i am expecting the output as

ORATAB FOR xiamin is


Code:
#!/bin/ksh
while getopts s: opt;
do
  case ${opt} in
    s) sid=${OPTARG} ;;
    \?)echo "Usage : get_ora_home  [-s ORACLE_SID]"
       return 1;;
  esac
done


if [ $# -ne 1 ] ; then
  echo "Usage: $(basename $0) [-s ] ORACLE_SID "
  return 1
fi


echo "ORATAB FOR $sid is"

# 2  
Old 03-02-2010
See the changes highlighted below:

Code:
#!/bin/sh
while getopts s: opt;
do
  case ${opt} in
    s) sid=${OPTARG} ;;
    \?)echo "Usage : get_ora_home  [-s ORACLE_SID]"
       exit 1 ;;
  esac
done
if [ $# -ne 2 ] ; then
echo "Usage: $(basename $0) [-s ] ORACLE_SID "
exit 2
fi
echo "ORATAB FOR $sid is"


cheers,
Devaraj Takhellambam
Last edited by pludi; 03-02-2010 at 08:12 AM.. Reason: added code tags
# 3  
Old 03-02-2010
Try this,

Code:
#!/bin/sh
while getopts "s:" opt
do
        case ${opt} in
                s) sid=${OPTARG} ;;
                *) echo "Usage : get_ora_home  [-s ORACLE_SID]"
                    exit 2 ;;
        esac
done

if [ $# -le 1 ] ; then                   # or it may be  [ $# -ne 2 ]
        echo "Usage: $(basename $0) [-s ] ORACLE_SID "
        exit 1
fi

echo "ORATAB FOR  $sid is"

Last edited by Nila; 03-12-2010 at 07:51 AM..
# 4  
Old 03-02-2010
Hi

Cannot use exit 1 as this is a fucntion and not a program in itself

If i set the line to [ $# -ne 2 ] or to [ $# -ne 1 ] how do i call this function from command line


Code:
#!/bin/sh
while getopts s: opt;
do
case ${opt} in
s) sid=${OPTARG} ;;
\?)echo "Usage : get_ora_home [-s ORACLE_SID]"
exit 1 ;;
esac
done
if [ $# -ne 2 ] ; then
echo "Usage: $(basename $0) [-s ] ORACLE_SID "
exit 2
fi
echo "ORATAB FOR $sid is"

regards
# 5  
Old 03-02-2010
It checks if the no of arguments passed in the script is 2 or not with
Code:
$# -ne 2

If the number of arguments is not 2, then the script will exit with the exit message specified.

You can execute the script as "script.sh -s xiamin"
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