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> The Unix answer is why are you using a regex on tab-separated values?

They aren't tab-separated. There are no tabs in readelf output.

Also if you assume they are space-separated, note that the first few lines look like this:

    Symbol table '.dynsym' contains 164 entries:
       Num:    Value          Size Type    Bind   Vis      Ndx Name
         0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND
> respond by pointing out your ignorance.

Indeed.




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