I have Tried .could u plz help..
out 'NR==FNR{_[$1];next}$1 in _' gprs2.txt gprs_calls2.txt

scripts by rplacing the respective filenames ,the out put does not have any data
the actual file lokks like this
Source file
7055000601
7055000633
7055000965
7055001182
7055001352
7055001468

Dest file to be compared(Source file no should be compared with dest file,the out should be the no of desti ,which exists in source,along with othere columns of desti corresponds the number
7055000601,35250401506992,621505200525591
7055000633,35574402566128,621505200525623
7055000965,35966800701265,621505200525952
7055001182,35844301188404,621505200526156
7055001352,35350902954276,621505200526325
7055001468,35195101170824,621505200526441
7055001490,35501600003290,621505200526463
7055003310,35487502010707,621505200528256
7055006309,04857558566586,621505200531213