shell variable security

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I guess I was asking in general how you can be sure your variables are safe.

Maybe it is more complicated than that?  I really have just heard warnings from

everyone, so I was taking pre-emptive measures.

 

I tried a few things myself too and also could not get that problem.

 

I tried making a file called test and doing things like

 

     K="$1"

     echo $K

 

 

and then calling

 

     test "hello\";date"

 

a nd

    FIL="$1"

    ls $FIL

 

but that seemed to be OK 

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