Re^3: perl file formatting

Are your input data columns really separated by a space? In the sample above it looks like it may be tabs, in which case your regexp won't match. Maybe try:

split(/\s+/, $_);
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Hope this helps!

The way forward always starts with a minimal test.

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Re^4: perl file formatting by perlforsgs (Initiate) on Jan 13, 2017 at 13:22 UTC
The separator is comma ,yes missed that in my snippet and I also need the date to be dynamically retrieved based on the current date of processing ,rather than hardcoded date	[reply]
Re^5: perl file formatting by GotToBTru (Prior) on Jan 13, 2017 at 14:28 UTC
tybalt89 showed you how to get the current date in the YYYYMMDD format you need. `use strict; use warnings; my $enddate = todate(); while(<DATA>) { last if ($. > 1 and $enddate < (split /,/)[1]); print $_; } sub todate { my ($year, $month, $day) = (localtime)[5,4,3]; return sprintf "%04d%02d%02d",$year + 1900, $month + 1, $day; } __DATA__ F12,F11,F481,F55,F989 8204B,20161002,1045.469,test,Y 8204,20170112,1064.848,test,Y 8204A,20170113,1064.505,test,Y 8204B,20170114,1045.469,test,Y` [download] $. is a built-in variable that counts lines of input. The split function implicitly operates on the current input line, producing a list (or maybe an array), and we take a slice of that to look at the only field we care about, the date in the second column. `H:\perl>perl 1178418.pl F12,F11,F481,F55,F989 8204B,20161002,1045.469,test,Y 8204,20170112,1064.848,test,Y 8204A,20170113,1064.505,test,Y` [download] Updated: reduced `if () {last if()}` to just `last if()`. But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. Romans 5:8 (NASB)	[reply] [d/l] [select]
Re^4: perl file formatting by perlforsgs (Initiate) on Jan 13, 2017 at 13:18 UTC
Actually each fields are separated by comma	[reply]