"Give me lines 1034 through 1047 of the file."

     perl -wn000e    # -n read file, 000 set $/ (input separator) to n
+il
                     # hence, read whole file into $_

    '$start = 1034;            # number of the line to start printing 
+at
     $end   = 1047;            # number of the line to end printing at
     $pre = $start - 1;        # the number of lines to skip before pr
+inting
     $len = $end - $start + 1; # the number of lines to print

     print / (?:            # don't remember this () in $1..$n
              .*\n          # all chars up to a newline and the \n
                  ){$pre}   #   pre number of times

             (              # remember this (return it as first el of 
+list)
              (?:           # but don't remember this part as 2nd elem
+ent
               .*\n         # match a line up to and including \n
                   ){$len}  #   number-of-lines-to-print times
              )             # return as single (multi-line) value 
           /mx'             # /m: don't let '.' match \n (may not be n
+ecessary)

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p

In reply to Re: Re: Re: Simulating UNIX's "tail" in core Perl by petral
in thread Simulating UNIX's "tail" in core Perl by gryphon

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