How can I get path/name of the softlink to my python script when executing it

[Saravanan Shanmugham (sarvi)]

Hi,
    I am writiing a script say "wabexec" in python
    I will then have softlinks from other softlinks like  ls, waf,hello,
etc that are in the same directory and pointing to wabexec.
 
When some executes ./waf or ./hello and wabexec gets invoked because of
the softlink, how do I find out from within wabexec how it was invoked?
was it throug waf or hello, etc.
 
both __file__ and sys.arg0[] seem to have wabexec not the name of the
softlink.
 
Any ideas?
 
Sarvi
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