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Processing arguments in a string

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# 1  
Old 06-22-2017
Processing arguments in a string
Hi

The following code works when reading the arguments from the command line but fails when I try to read from a string. So this works

Code:
while [ -n "$1" ]; do
  case $1 in
        -dbversion) if [ "`echo $2 | grep -e '^-[a-z]'`" ]; then { echo "ERROR: missing value for '$1' (seen '$2')"; usage; exit 1; } else { shift; INPUT_VERSION=$1;   } fi ;;
        -type) if [ "`echo $2 | grep -e '^-[a-z]'`" ]; then { echo "ERROR: missing value for '$1' (seen '$2')"; usage; exit 1; } else { shift; INPUT_TARGET_TYPE=$1;   } fi ;;
        -host) if [ "`echo $2 | grep -e '^-[a-z]'`" ]; then { echo "ERROR: missing value for '$1' (seen '$2')"; usage; exit 1; } else { shift; INPUT_HOST=$1;   } fi ;;
  *)    echo "ERROR: unknown argument '$1'"; exit 1;;
  esac
  shift
done

but when I replace the line
Code:
while [ -n "$1" ]; do

witth
Code:
OPTPARMS="-dbversion 11.2.0.4.0 -type backup -host testhost"
 while [ -n $OPTPARMS ]; do

it only sees the "ERROR: unknown argument"

Can somebody please tell me what the problem is?
Many thanks

Please ignore the old code (back ticks, echo etc.).
# 2  
Old 06-22-2017
Hi general_franco,

If you want to manually force arguments, you can use :
Code:
set -- -dbversion 11.2.0.4.0 -type backup -host testhost
while [ -n "$1" ]; do

Regards
Santiago
This User Gave Thanks to chebarbudo For This Post:
user052009
# 3  
Old 06-22-2017
Thanks Santiago. I need to pass in a variable into the while loop. The values in $OPTPARMS will change every run.
So
Code:
set -- $OPTPARMS

before the while loop should work, right?
Last edited by user052009; 06-22-2017 at 05:44 PM..
# 4  
Old 06-22-2017
If you use OPTPARMS for passing the info, you need to use it in the case statement as well...
# 5  
Old 06-22-2017
Will the command
Code:
set -- $OPTPARMS

not push the values in $OPTPARMS back onto the input stack?

So the code in the first post will stay the same if I use this cmd before it?
# 6  
Old 06-22-2017
Yes, try and report back...
# 7  
Old 06-23-2017
yes, that works! Smilie
Thanks
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