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shell script to execute user command


 
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# 1  
Question shell script to execute user command

I don't know why the following shell script doesn't work. Could you please help me out?

#!/usr/bin/ksh

test="cal > /tmp/tmp.txt 2>&1"
$test


I know it will work for the following format:

#!/usr/bin/ksh

cal > /tmp/tmp.txt 2>&1

However, I need to get the command from the user in my script, so I have to save this command including arguments in a variable.

Thanks
# 2  
eval $test

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