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[Renato Freitas]

Hi all,
I have a file of the type:

@<TRIPOS>MOLECULE
ZINC00365004
29 30 1 0 0
SMALL
GASTEIGER
Energy = 0
@<TRIPOS>ATOM
1 C1 18.6948 -17.1891 17.7207 C.ar 1 <1> -0.1540
2 C2 18.1842 -16.5466 16.6044 C.ar 1 <1> -0.0640
3 C3 18.9586 -15.6459 15.9010 C.ar 1 <1> -0.1390
@<TRIPOS>MOLECULE
ZINC00365004
29 30 1 0 0
SMALL
GASTEIGER
Energy = 0
@<TRIPOS>ATOM
1 C1 24.6614 -14.0513 23.5165 C.ar 1 <1> -0.1540
2 C2 23.5554 -14.8746 23.3804 C.ar 1 <1> -0.0640
3 C3 23.2769 -15.4765 22.1697 C.ar 1 <1> -0.1390
@<TRIPOS>MOLECULE
ZINC00365004
29 30 1 0 0
SMALL
GASTEIGER
Energy = 0
@<TRIPOS>ATOM
1 C1 25.9438 -18.4416 21.2850 C.ar 1 <1> -0.1540
2 C2 25.4544 -19.2881 20.3033 C.ar 1 <1> -0.0640
3 C3 24.8088 -18.7750 19.1962 C.ar 1 <1> -0.1390

I would like to know if there is some way to substitute the repeated words by using sed or awk:

ZINC00365004
ZINC00365004
ZINC00365004

by

ZINC00365004_1
ZINC00365004_2
ZINC00365004_3

Thanks for your help,

Renato

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