in reply to Re: if ($?variable_name)
in thread if ($?variable_name)

The script which i am looking at has both the perl and tcsh interpreter definded. I am wondering it may be a tcsh syntax then as it does not fit the context . I think it means if the variable variable_name exists get in the if condition ,looking at the context . But not sure .. Thanks

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Re^3: if ($?variable_name)
by choroba (Cardinal) on Jul 24, 2013 at 22:25 UTC
    Seems you have the answer. The tcsh documentation says: 
       $?name
   ${?name}
               Substitutes the string `1' if name is set, `0' if it is not.
    لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
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