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Passing parameter filled variable to a script.

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# 1  
Old 10-13-2013
Passing parameter filled variable to a script.
Say I have something like this to try and build a parameter string:

Code:
OPT1="This is my Option";
OPT2="/folder/file";

PARMS="-u me -J \"$OPT1\" -g \"$OPT2\"";

./script.ksh -n 1 $PARMS;
./script.ksh -n 2 $PARMS;
./script.ksh -n 3 $PARMS;
./script.ksh -n 4 $PARMS;

But this doesn't work. For example, it just sees "This" passed instead of the whole string. Parameters without spaces seem fine. Is there anyway to do so? Tried ' and { and combinations of but no luck. Can't seem to pass the whole string in. Here's how it looks (' "This ' is printed but not the whole string):

Code:
# ./dummy.ksh
NARG=|1|
UARG=|me|
GARG=||
JARG=|"This|

NARG=|2|
UARG=|me|
GARG=||
JARG=|"This|

NARG=|3|
UARG=|me|
GARG=||
JARG=|"This|

NARG=|4|
UARG=|me|
GARG=||
JARG=|"This|

# cat script.ksh
#!/usr/bin/ksh


while getopts n:u:g:J: option; do
        case ${option} in
                n)      NARG="$OPTARG"
                        ;;
                u)      UARG="$OPTARG"
                        ;;
                g)      GARG="$OPTARG"
                        ;;
                J)      JARG="$OPTARG"
                        ;;
                [?])    print >&2 "Good Luck!";
                        exit 1
                        ;;
                esac
done


print "NARG=|$NARG|";
print "UARG=|$UARG|";
print "GARG=|$GARG|";
print "JARG=|$JARG|";
print;
# cat dummy.ksh
#!/usr/bin/ksh

OPT1="This is my Option";
OPT2="/folder/file";

PARMS="-u me -J \"$OPT1\" -g \"$OPT2\"";

./script.ksh -n 1 $PARMS;
./script.ksh -n 2 $PARMS;
./script.ksh -n 3 $PARMS;
./script.ksh -n 4 $PARMS;

#

Passing directly works fine, but not through a parameter of flags.

Cheers,
DH
Last edited by Devyn; 10-13-2013 at 10:12 PM..
# 2  
Old 10-14-2013
I does not work like you expect, because the expansion of $PARAMS will use $IFS (space, tab, newline by default) to separate fields and thus it will ignore double quotes.

So
Code:
./script.ksh -n 1 -u me -J "$OPT1" -g "$OPT2"

should work.

To put that in a variable first and then expand it later, you could use something like eval but then there may be security concerns ...
Last edited by Scrutinizer; 10-14-2013 at 09:06 AM..
# 3  
Old 10-14-2013
You can also have a look at an exemple here
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