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Script help: sliding time windows

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# 1  
Old 02-19-2010
Script help: sliding time windows
I have a script like this ...

Code:
#!/bin/ksh
database=$(echo $@ | sed 's/.*-S \([a-zA-Z0-9]*\).*/\1/')
instance=$(grep $database /var/opt/oracle/oratab | awk -F : '{print $1}')
command=$(echo $@ | sed "s/$database/$instance/")
echo  $command


if I execute this script in ksh or bash it works fine .

when I tried to execute this from another system I am getting this error . Didn't understand why it's failing....

HTML Code:
grep: invalid option -- S
Usage: grep [OPTION]... PATTERN [FILE]...
Try `grep --help' for more information.
sed: -e expression #1, char 8: unknown option to `s'

Thanks
# 2  
Old 02-19-2010
Try this
Code:
grep "$database" /var/opt/oracle/oratab

Code:
sed 's/'"$database"'/'"$instance"'/'

# 3  
Old 02-19-2010
Please post an example of how the script is called.
# 4  
Old 02-19-2010
Thankyou !!
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