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Assign a sting to a name?

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# 1  
Old 04-28-2009
Assign a sting to a name?
i want to assign a anme for a string, i got the things below, but it doesn't work.

MParc1=``

if [ "${num}" = 0 ]
then
$MPrac1=`Prac1` # assign $MPrac1 to Prac1
else
$MPrac1=`` #assigne $MPrac1 to nothing
fi
echo "${MPrac1} >>file

Output: (if num is 0)
Prac1

can you please find out the problem?
# 2  
Old 04-28-2009
First if you are posting try and put your code inbetween code tags.

You are using back ticks instead of quotes which is the problem. back tics try and run a remote command.

Try this :-

Code:
MParc1=""
      	
if [ "${num}" = 0 ]
	then
		$MPrac1="Prac1" # assign $MPrac1 to Prac1
	else
		$MPrac1=""         #assigne $MPrac1 to nothing
fi
echo "${MPrac1}" >>file

# 3  
Old 04-28-2009
Quote:
Originally Posted by lavascript
First if you are posting try and put your code inbetween code tags.

You are using back ticks instead of quotes which is the problem. back tics try and run a remote command.

Try this :-

Code:
MParc1=""
      	
if [ "${num}" = 0 ]
	then
		$MPrac1="Prac1" # assign $MPrac1 to Prac1
	else
		$MPrac1=""         #assigne $MPrac1 to nothing
fi
echo "${MPrac1}" >>file

Code:
# no need to initialize, but.....
MParc1=''
      	
if [ "${num}" -eq 0 ]
	then
		MPrac1='Prac1' # assign Prac1 TO MPrac1
	else
		MPrac1=''         #assign nothing  to MPrac1
fi
echo "${MPrac1}" >>file

# 4  
Old 04-28-2009
Quote:
Originally Posted by lavascript
First if you are posting try and put your code inbetween code tags.

You are using back ticks instead of quotes which is the problem. back tics try and run a remote command.

Try this :-

Code:
MParc1=""
      	
if [ "${num}" = 0 ]
	then
		$MPrac1="Prac1" # assign $MPrac1 to Prac1
	else
		$MPrac1=""         #assigne $MPrac1 to nothing
fi
echo "${MPrac1}" >>file

it is not working
it show something like this
./c.sh: line 37: =: command not found
./c.sh: line 43: =: command not found
./c.sh: line 48: =Prac1: command not found
# 5  
Old 04-28-2009
Sorry i just copied your original code and forgot to remove the $ from the variable assignment.

See vgersh99's solution.

you could use either ' ' or " " in this instance.
# 6  
Old 04-28-2009
Quote:
Originally Posted by mingming88
it is not working
it show something like this
./c.sh: line 37: =: command not found
./c.sh: line 43: =: command not found
./c.sh: line 48: =Prac1: command not found

I assume you have put the correct interpreter at the top of the script and not just copied what we put in the post here?

I was just using your origiinal example and adapting the bits accordingly.

You may want to do this :-

Code:
#!/bin/ksh

MParc1=""
      	
if [ "${num}" = 0 ]
	then
		MPrac1="Prac1" # assign $MPrac1 to Prac1
	else
		MPrac1=""         #assigne $MPrac1 to nothing
fi
echo "${MPrac1}" >>file

But then don't forget i've not assigned $num anywhere.
You will also get the output of MPrac1 in file or file with nothing.
# 7  
Old 04-28-2009
It is working now.
Thank you guys.
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