Thanks for the help era. But one more requirment needs to be included in the coding.

if we did not find any match for the given input from the file then it should not write a blank file.

waiting for you replay

Thanks
Arun

Could Somebody give me the Code.
Thanks
Arun

Actually it's much simpler if you simply remove any zero-sized file after you're done. Would that be acceptable?

Incidentally, it's against the forum rules to "bump" questions. Expecting, or even demanding a reply within the hour is not very realistic.

Bumping up posts is against the Rules.

thank you so much era.

Hi era,

after exceuting the command egrep 'first|second|third' file1 file2 file3 >have. the output file is showing different values with the filename at the begening of each and every line. example is given below.

content of file 1

arun RD002136823 1
madhu 11111111111 2
srini RD002136823 3
syam 22222222222 4
gauth 33333333333 5
laxmi 44444444444 6
ranjit RD002136823 7
ranga 5555555555 8
pmsat 66666666 9

content of file2 is

subbu RD002136823 1
anil 11111111111 2
raju RD002136823 3
vaga 22222222222 4
kotra 33333333333 5
adapa 44444444444 6
amith RD002136823 7
arora 5555555555 8
vestha 66666666 9

after the command egrep RD002136823 $FILE1 $FILE2 > $FILE3

the out is like below

arigmrec01.in:arun RD002136823 1
arigmrec01.in:srini RD002136823 3
arigmrec01.in:ranjit RD002136823 7
arigmrec03.in:subbu RD002136823 1
arigmrec03.in:raju RD002136823 3
arigmrec03.in:amith RD002136823 7

but i don't want the file name to come in the begening of each line. i need only the content of from both the files into another file.

Waiting for ur replay.

Thanks
Arun

doing 'man egrep' yields :