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Full Discussion: Print lines based on line number and specified condition
Top Forums Shell Programming and Scripting Print lines based on line number and specified condition Post 302924099 by Anjan1 on Thursday 6th of November 2014 07:16:51 AM
Old 11-06-2014
I have tried it in perl.

Code:
#!/usr/bin/perl

use warnings;
use strict;

my @result;

my $filename = "new_num.txt";

my $i;
unlink $filename;

#START:
while(<>) {

$_ =~ s/,/\n/g;

if (($. == 1) .. ($. == 3)) {

#$_ =~ s/^ //g;

push (@result,$_);


print "@result";

foreach $i (@result) {

$i =~ s/\n/,/g;

open FILE,">>$filename" or die "Cannot read the file $filename: $!\n";

print FILE "$i";

#print FILE "\n";

@result = ();


#goto START;

}

ravinder singh can you please explain me your awk code.
Last edited by Anjan1; 11-06-2014 at 08:37 AM.. Reason: code change
 

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LEARN ABOUT V7

fopen

FOPEN(3S)																 FOPEN(3S)

NAME

       fopen, freopen, fdopen - open a stream

SYNOPSIS

       #include <stdio.h>

       FILE *fopen(filename, type)
       char *filename, *type;

       FILE *freopen(filename, type, stream)
       char *filename, *type;
       FILE *stream;

       FILE *fdopen(fildes, type)
       char *type;

DESCRIPTION

       Fopen  opens the file named by filename and associates a stream with it.  Fopen returns a pointer to be used to identify the stream in sub-
       sequent operations.

       Type is a character string having one of the following values:

       "r"  open for reading

       "w"  create for writing

       "a"  append: open for writing at end of file, or create for writing

       Freopen substitutes the named file in place of the open stream.	It returns the original value of stream.  The original stream is closed.

       Freopen is typically used to attach the preopened constant names, stdin, stdout, stderr, to specified files.

       Fdopen associates a stream with a file descriptor obtained from open, dup, creat, or pipe(2).  The type of the stream must agree  with  the
       mode of the open file.

SEE ALSO

       open(2), fclose(3)

DIAGNOSTICS

       Fopen and freopen return the pointer NULL if filename cannot be accessed.

BUGS

       Fdopen is not portable to systems other than UNIX.

																	 FOPEN(3S)
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