bin/sh eval variable assignment


 
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# 1  
Old 02-21-2009
bin/sh eval variable assignment

Why can't I do this?
eval "TEST=5;echo $TEST;";


THIS WORKS!!
TEST=5;echo $TEST;
# 2  
Old 02-21-2009
I figured it out I have to escape \$

It also appears I have to escape backticks (`)

Why is this?
# 3  
Old 02-21-2009
eval tells the shell to take the parameters and interpret them as if they had just been typed on the command line. So take:

Code:
eval echo $TEST

the shell first interprolates the variables as normal, so eval sees:
Code:
eval echo 5

and so executes:
Code:
echo 5

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