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Passing arguments while running the script

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# 1  
Old 11-14-2014
Passing arguments while running the script
Hi,

I have a requirement for creating a MQ (queue) where the inputs has to be passed as arguments.

Running the script as below
./hi.sh "Servername" "QueueManagername" "QueuecreationCommand"

Code:
cat hi.sh

echo "Welcome to $1"
runmqsc $2 < $3

But the queue creation command is throwing error as below.

Code:
$ ./hi.sh "xclx111" "QASSSSS" "DEFINE QL("HI")"
Welcome to xclx111
./hi.sh: line 2: $3: ambiguous redirect


$ ./hi.sh xclx111 QASSSSS DEFINE QL("test")
-ksh: syntax error: `(' unexpected

Can someone please help on fixing this issue.

Thanks,
Anusha M
# 2  
Old 11-14-2014
Input redirection needs to be from a file, a here document or -string, or a process substitution (latter in recent shells), which none of your positional parameters is. Try using either of above.
# 3  
Old 11-14-2014
Hi Rudic,

The purpose is to automate running this script using a tool. So the manual activity of changing the file which is passed as argument is impossible.

Every time the requirement changes for queue/channel/subscription creation, deletion, alteration, display. And the 3rd argument is a command of MQ

Code:
For example:
./hi.sh "Servername" "QueueManagername" "QueuecreationCommand"

Requirement 1:
./hi.sh "xclx111" "QASSSSS" "DEFINE QL("hi")"

Requirement 2:
./hi.sh "xclx111" "QASSSSS" "DISPLAY QS("hi")"


DEFINE QL("hi")
DISPLAY QS("hi")

These are MQ commands for queue creation and display respectively


Can you please suggest on this.

Thanks,
Anusha M
# 4  
Old 11-14-2014
can you try using single quotes around the queue creation command
# 5  
Old 11-14-2014
Unless you find a way to massage the function/effect/output of the MQ command into any of the above, you're doomed.
IF you want redirection, that is. From your wording I infer you might need sth else. Do you?
# 6  
Old 11-14-2014
Quote:
Originally Posted by Anusha M
Hi Rudic,

The purpose is to automate running this script using a tool. So the manual activity of changing the file which is passed as argument is impossible.
Do you mean those arguments are things you'd usually be typing into the script? < expects a filename, to feed text into it you'll want a pipe. Maybe something like:

Code:
echo "Welcome to $1"
# Put $2 and $3 inside double quotes to prevent them splitting upon spaces
echo "$3" | runmqsc "$2"

It's also important to note that your requirements are broken, these won't work:

Code:
Requirement 1:
./hi.sh "xclx111" "QASSSSS" "DEFINE QL("hi")"

Requirement 2:
./hi.sh "xclx111" "QASSSSS" "DISPLAY QS("hi")"

...because you cannot put quotes inside quotes like that. You could do this:

Code:
Requirement 1:
./hi.sh "xclx111" "QASSSSS" 'DEFINE QL("hi")


Code:



'






Requirement 2:
./hi.sh "xclx111" "QASSSSS" 'DISPLAY QS("hi")'

...as long as you're aware that variables don't expand inside single quotes. You couldn't do 'DISPLAY QS("$shellvariable")' and expect $shellvariable to be substituted.

If you can do "DEFINE QL('$shellvariable')" that's quite okay.

You can also escape things with \ inside double-quotes like "DEFINE QL(\"value\")"
Last edited by Corona688; 11-14-2014 at 11:36 AM..
# 7  
Old 11-14-2014
An expanded here string containing a command substitution might work.
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