MIN MAX for GREP?

[Chris Doe]

I have a large .CSV file with 10 fields on each line. The first field
is a EPOCH date which is the only field I am interested in.

My dilemma: Based on a START and END date provided from the user, I
need to be able to PIPE all lines within that CSV file to a temporary
file which start with an EPOCH date ( >= START date and <=END date )

I have been trying something along the lines of

grep "^\{$min, $max\}" file.csv > temp.csv but no luck... Any ideas

Regards
Chris

 

[Tad McClellan]

Subject: MIN MAX for GREP?

There is no need to shout at us.

I have a large .CSV file with 10 fields on each line. The first field
is a EPOCH date which is the only field I am interested in.

My dilemma: Based on a START and END date provided from the user, I
need to be able to PIPE all lines within that CSV file to a temporary
file

That cannot be done.

A pipe connects two _programs_.

You simply want to _write_ it to a file, I expect.

which start with an EPOCH date ( >= START date and <=END date )

I have been trying something along the lines of

grep "^\{$min, $max\}" file.csv > temp.csv but no luck... Any ideas

That is not Perl, that is grep(1).

Please ask Perl questions in the Perl newsgroup, ask questions about
OS-specific tools in the appropriate OS-specific newsgroup.


Here is how you can do it with Perl:

# untested
while ( <CSV> ) {
# get fields into @record somehow (hint: use a module)
print OUT if $record[0] >= $start and $record[0] <= $end;
}