Re: Reading specific lines in a file

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Re^2: Reading specific lines in a file by gurpreetsingh13 (Scribe) on May 20, 2014 at 09:25 UTC
That's good one. Correct me if I'm wrong. Hope this is using $_ and not $., since a while loop is roaming around the statement with perl -n . So what would be the expanded form of this statement?	[reply]
Re^3: Reading specific lines in a file by Discipulus (Canon) on May 20, 2014 at 11:47 UTC
as pointed by ambrus in the chat `$.` come in place because of flip flop operator `If either operand of scalar ".." is a constant expression, that operan +d is considered true if it is equal (== ) to the current input line n +umber (the $. variable).` [download] HtH L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]
Re^3: Reading specific lines in a file by Laurent_R (Canon) on May 20, 2014 at 15:15 UTC
It is using implicitly both $. and $_. A possible expanded form could be: `perl -ne 'print $_ if $. >= 60 and $. <= 70' file.txt` [download] or, expanding further: `perl -e 'while (<>) {print $_ if $. >= 60 and $. <= 70;}' file.txt` [download]	[reply] [d/l] [select]