Re: Read Some lines in Tera byte file

[ikegami]

Unless you happen to know the position at which the 100th line starts, you'll have to read from the start of the file. You can stop reading any time, though.

for (1..100) {
   <$fh>;
}

for (1..100) {
   my $line = <$fh>;
   ...
}

[Anonymous Monk]

Thanks for reply

Here ..

for (1..100) {
   <$fh>;
}

we are reading from 1st line to 100th lines, then

for (1..100) {
   my $line = <$fh>;
   ...
}

we are saving required to a variable i.e from position 100th line 200th line

So unnecessary reading first 100 lines in the first code, is it possible directly read from 100th line?

[ikegami]

Already answered. Unless you happen to know the position at which the 100th line starts, you'll have to read from the start of the file. If you do, you can jump straight to that position using seek.

[Corion]

No.

[Anonymous Monk]

because i said file is in tera bytes, so if my file reading position is nth (ex : 99999999) then it will be difficult to parse all lines and consuming time also.

do we have function in perl like seek?

[Anonymous Monk]

because i said file is in tera bytes, so if my file reading position is nth (ex : 99999999) then it will be difficult to parse all lines and consuming time also.

do we have function in perl like seek?