Looking for a non-case sensitive search using perl, So if a "!" is detected at the start of the line, a new sort begins (only on the section).
[test file]
! Sort Section
!
a
g
r
e
! New Sort Section
1
2
d
3
h
becomes,
[test file]
! Sort Section
!
a
e
g
r
! New Sort Section
1
2
3
d
h
Here's one way to do it:
use strict;
use warnings;
my $filename = shift or die 'filename!';
my #sections;
my $current;
# input
open my $fh, '<', $filename or die "open $filename: $!";
while ( <$fh> ) {
if ( m/^!/ ) {
$current = [ $_ ];
push #sections, $current;
}
else {
push #$current, $_;
}
}
close $fh;
# output
for ( #sections ) {
print shift #$_; # print first line
print sort #$_; # print rest
}
Another one, using an output file. More importantly, not loading an entire file into memory:
use strict;
use warnings;
sub output {
my( $lines, $fh ) = #_;
return unless #$lines;
print $fh shift #$lines; # print first line
print $fh sort { lc $a cmp lc $b } #$lines; # print rest
return;
}
# ==== main ============================================================
my $filename = shift or die 'filename!';
my $outfn = "$filename.out";
die "output file $outfn already exists, aborting\n" if -e $outfn;
# prereqs okay, set up input, output and sort buffer
open my $fh, '<', $filename or die "open $filename: $!";
open my $fhout, '>', $outfn or die "open $outfn: $!";
my $current = [];
# process data
while ( <$fh> ) {
if ( m/^!/ ) {
output $current, $fhout;
$current = [ $_ ];
}
else {
push #$current, $_;
}
}
output $current, $fhout;
close $fhout;
close $fh;
Related
I have a original file which has following columns,
02-May-2018,AAPL,Sell,0.25,1000
02-May-2018,C,Sell,0.25,2000
02-May-2018,JPM,Sell,0.25,3000
02-May-2018,WFC,Sell,0.25,5000
02-May-2018,AAPL,Sell,0.25,7000
02-May-2018,GOOG,Sell,0.25,8000
02-May-2018,GOOG,Sell,0.25,9000
02-May-2018,C,Sell,0.25,2000
02-May-2018,AAPL,Sell,0.25,3000
I am trying to print this original line if I see value in the second column more then 2 times.. for example, if I see AAPL more then 2 times desired result should print
02-May-2018,AAPL,Sell,0.25,1000
02-May-2018,AAPL,Sell,0.25,7000
02-May-2018,AAPL,Sell,0.25,3000
So Far, I have written the following which prints results multiple times which is wrong.. can you please help on what I am doing wrong?
open (FILE, "<$TMPFILE") or die "Could not open $TMPFILE";
open (OUT, ">$TMPFILE1") or die "Could not open $TMPFILE1";
%count = ();
#symbol = ();
while ($line = <FILE>)
{
chomp $line;
(#data) = split(/,/,$line);
$count{$data[1]}++;
#keys = sort {$count{$a} cmp $count{$b}} keys %count;
for my $key (#keys)
{
if ( $count{$key} > 2 )
{
print "$line\n";
}
}
}
I'd do it something like this - store lines you've seen in a 'buffer' and print them out again if the condition is hit (before continuing to print as you go):
#!/usr/bin/env perl
use strict;
use warnings;
my %buffer;
my %count_of;
while ( my $line = <> ) {
my ( $date, $ticker, #values ) = split /,/, $line;
#increment the count
$count_of{$ticker}++;
if ( $count_of{$ticker} < 3 ) {
#count limit not hit, so stash the current line in the buffer.
$buffer{$ticker} .= $line;
next;
}
#print the buffer if the count has been hit
if ( $count_of{$ticker} == 3 ) {
print $buffer{$ticker};
}
#only gets to here once the limit is hit, so just print normally.
print $line;
}
With your input data, this outputs:
02-May-2018,AAPL,Sell,0.25,1000
02-May-2018,AAPL,Sell,0.25,7000
02-May-2018,AAPL,Sell,0.25,3000
Simple answer:
push #{ $lines{(split",")[1]} }, $_ while <>;
print #{ $lines{$_} } for grep #{ $lines{$_} } > 2, sort keys %lines;
perl program.pl inputfile > outputfile
You need to read the input file twice, because you don't know the final counts until you get to the end of the file
use strict;
use warnings 'all';
my ($TMPFILE, $TMPFILE1) = qw/ infile outfile /;
my %counts;
{
open my $fh, '<', $TMPFILE or die "Could not open $TMPFILE: $!";
while ( <$fh> ) {
my #fields = split /,/;
++$counts{$fields[1]};
}
}
open my $fh, '<', $TMPFILE or die "Could not open $TMPFILE: $!";
open my $out_fh, '>', $TMPFILE1 or die "Could not open $TMPFILE1: $!";
while ( <$fh> ) {
my #fields = split /,/;
print $out_fh $_ if $counts{$fields[1]} > 2;
}
output
02-May-2018,AAPL,Sell,0.25,1000
02-May-2018,AAPL,Sell,0.25,7000
02-May-2018,AAPL,Sell,0.25,3000
This should work:
use strict;
use warnings;
open (FILE, "<$TMPFILE") or die "Could not open $TMPFILE";
open (OUT, ">$TMPFILE1") or die "Could not open $TMPFILE1";
my %data;
while ( my $line = <FILE> ) {
chomp $line;
my #line = split /,/, $line;
push(#{$data{$line[1]}}, $line);
}
foreach my $key (keys %data) {
if(#{$data{$key}} > 2) {
print "$_\n" foreach #{$data{$key}};
}
}
I am trying to solve below issues.
I have 2 files. Address.txt and File.txt. I want to replace all A/B/C/D (File.txt) with corresponding string value (Read from Address.txt file) using perl script. It's not replacing in my output file. I am getting same content of File.txt.
I tried below codes.
Here is Address.txt file
A,APPLE
B,BAL
C,CAT
D,DOG
E,ELEPHANT
F,FROG
G,GOD
H,HORCE
Here is File.txt
A B C
X Y X
M N O
D E F
F G H
Here is my code :
use strict;
use warnings;
open (MYFILE, 'Address.txt');
foreach (<MYFILE>){
chomp;
my #data_new = split/,/sm;
open INPUTFILE, "<", $ARGV[0] or die $!;
open OUT, '>ariout.txt' or die $!;
my $src = $data_new[0];
my $des = $data_new[1];
while (<INPUTFILE>) {
# print "In while :$src \t$des\n";
$_ =~ s/$src/$des/g;
print OUT $_;
}
close INPUTFILE;
close OUT;
# /usr/bin/perl -p -i -e "s/A/APPLE/g" ARGV[0];
}
close (MYFILE);
If i Write $_ =~ s/A/Apple/g;
Then output file is fine and A is replacing with "Apple". But when dynamically coming it's not getting replaced.
Thanks in advance. I am new in perl scripting language . Correct me if I am wrong any where.
Update 1: I updated below code . It's working fine now. My questions Big O of this algo.
Code :
#!/usr/bin/perl
use warnings;
use strict;
open( my $out_fh, ">", "output.txt" ) || die "Can't open the output file for writing: $!";
open( my $address_fh, "<", "Address.txt" ) || die "Can't open the address file: $!";
my %lookup = map { chomp; split( /,/, $_, 2 ) } <$address_fh>;
open( my $file_fh, "<", "File1.txt" ) || die "Can't open the file.txt file: $!";
while (<$file_fh>) {
my #line = split;
for my $char ( #line ) {
( exists $lookup{$char} ) ? print $out_fh " $lookup{$char} " : print $out_fh " $char ";
}
print $out_fh "\n";
}
Not entirely sure how you want your output formatted. Do you want to keep the rows and columns as is?
I took a similar approach as above but kept the formatting the same as in your 'file.txt' file:
#!/usr/bin/perl
use warnings;
use strict;
open( my $out_fh, ">", "output.txt" ) || die "Can't open the output file for writing: $!";
open( my $address_fh, "<", "address.txt" ) || die "Can't open the address file: $!";
my %lookup = map { chomp; split( /,/, $_, 2 ) } <$address_fh>;
open( my $file_fh, "<", "file.txt" ) || die "Can't open the file.txt file: $!";
while (<$file_fh>) {
my #line = split;
for my $char ( #line ) {
( exists $lookup{$char} ) ? print $out_fh " $lookup{$char} " : print $out_fh " $char ";
}
print $out_fh "\n";
}
That will give you the output:
APPLE BAL CAT
X Y X
M N O
DOG ELEPHANT FROG
FROG GOD HORCE
Here's another option that lets Perl handle the opening and closing of files:
use strict;
use warnings;
my $addresses_txt = pop;
my %hash = map { $1 => $2 if /(.+?),(.+)/ } <>;
push #ARGV, $addresses_txt;
while (<>) {
my #array;
push #array, $hash{$_} // $_ for split;
print "#array\n";
}
Usage: perl File.txt Addresses.txt [>outFile.txt]
The last, optional parameter directs output to a file.
Output on your dataset:
APPLE BAL CAT
X Y X
M N O
DOG ELEPHANT FROG
FROG GOD HORCE
The name of the addresses' file is implicitly popped off of #ARGV for use later. Then, a hash is built, using the key/value pairs in File.txt.
The addresses' file is read, splitting each line into its single elements, and the defined-or (//) operator is used to returned the defined hash item or the single element, which is then pushed onto #array. Finally, the array is interpolated in a print statement.
Hope this helps!
First, here is your existing program, rewritten slightly
open the address file
convert the address file to a hash so that the letters are the keys and the strings the values
open the other file
read in the single line in it
split the line into single letters
use the letters to lookup in the hash
use strict;
use warnings;
open(my $a,"Address.txt")||die $!;
my %address=map {split(/,/) } map {split(' ')} <$a>;
open(my $f,"File.txt")||die $!;
my $list=<$f>;
for my $letter (split(' ',$list)) {
print $address{$letter}."\n" if (exists $address{$letter});
}
to make another file with the substitutions in place alter the loop that processes $list
for my $letter (split(' ',$list)) {
if (exists $address{$letter}) {
push #output, $address{$letter};
}
else {
push #output, $letter;
}
}
open(my $o,">newFile.txt")||die $!;
print $o "#output";
Your problem is that in every iteration of your foreach loop you overwrite any changes made earlier to output file.
My solution:
use strict;
use warnings;
open my $replacements, 'Address.txt' or die $!;
my %r;
foreach (<$replacements>) {
chomp;
my ($k, $v) = split/,/sm;
$r{$k} = $v;
}
my $re = '(' . join('|', keys %r) . ')';
open my $input, "<", $ARGV[0] or die $!;
while (<$input>) {
s/$re/$r{$1}/g;
print;
}
#!/usr/bin/perl -w
# to replace multiple text strings in a file with text from another file
#select text from 1st file, replace in 2nd file
$file1 = 'Address.txt'; $file2 = 'File.txt';
# save the strings by which to replace
%replacement = ();
open IN,"$file1" or die "cant open $file1\n";
while(<IN>)
{chomp $_;
#a = split ',',$_;
$replacement{$a[0]} = $a[1];}
close IN;
open OUT,">replaced_file";
open REPL,"$file2" or die "cant open $file2\n";
while(<REPL>)
{chomp $_;
#a = split ' ',$_; #replaced_data = ();
# replace strings wherever possible
foreach $i(#a)
{if(exists $replacement{$i}) {push #replaced_data,$replacement{$i};}
else {push #replaced_data,$i;}
}
print OUT trim(join " ",#replaced_data),"\n";
}
close REPL; close OUT;
########################################
sub trim
{
my $str = $_[0];
$str=~s/^\s*(.*)/$1/;
$str=~s/\s*$//;
return $str;
}
I'm trying to count the number of 'N's in a FASTA file which is:
>Header
AGGTTGGNNNTNNGNNTNGN
>Header2
AGNNNNNNNGNNGNNGNNGN
so in the end I want to get the count of number of 'N's and each header is a read so I want to make a histogram so I would at the end output something like this:
# of N's # of Reads
0 300
1 240
etc...
so there are 300 sequences or reads that have 0 number of 'N's
use strict;
use warnings;
my $file = shift;
my $output_file = shift;
my $line;
my $sequence;
my $length;
my $char_N_count = 0;
my #array;
my $count = 0;
if (!defined ($output_file)) {
die "USAGE: Input FASTA file\n";
}
open (IFH, "$file") or die "Cannot open input file$!\n";
open (OFH, ">$output_file") or die "Cannot open output file $!\n";
while($line = <IFH>) {
chomp $line;
next if $line =~ /^>/;
$sequence = $line;
#array = split ('', $sequence);
foreach my $element (#array) {
if ($element eq 'N') {
$char_N_count++;
}
}
print "$char_N_count\n";
}
Try this. I changed a few things like using scalar file handles. There are many ways to do this in Perl, so some people will have other ideas. In this case I used an array which may have gaps in it - another option is to store results in a hash and key by the count.
Edit: Just realised I'm not using $output_file, because I have no idea what you want to do with it :) Just change the 'print' at the end to 'print $out_fh' if your intent is to write to it.
use strict;
use warnings;
my $file = shift;
my $output_file = shift;
if (!defined ($output_file)) {
die "USAGE: $0 <input_file> <output_file>\n";
}
open (my $in_fh, '<', $file) or die "Cannot open input file '$file': $!\n";
open (my $out_fh, '>', $output_file) or die "Cannot open output file '$output_file': $!\n";
my #results = ();
while (my $line = <$in_fh>) {
next if $line =~ /^>/;
my $num_n = ($line =~ tr/N//);
$results[$num_n]++;
}
print "# of N's\t# of Reads\n";
for (my $i = 0; $i < scalar(#results) ; $i++) {
unless (defined($results[$i])) {
$results[$i] = 0;
# another option is to 'next' if you don't want to show the zero totals
}
print "$i\t\t$results[$i]\n";
}
close($in_fh);
close($out_fh);
exit;
I have a file that looks like
NAME|JOHN|TOKYO|JPN
AGE|32|M
INFO|SINGLE|PROFESSIONAL|IT
NAME|MARK|MANILA|PH
AGE|37|M
INFO|MARRIED|PROFESSIONAL|BPO
NAME|SAMANTHA|SYDNEY|AUS
AGE|37|F
INFO|MARRIED|PROFESSIONAL|OFFSHORE
NAME|LUKE|TOKYO|JPN
AGE|27|M
INFO|SINGLE|PROFESSIONAL|IT
I want to separate the records by country. I have stored each line into array variable #fields
my #fields = split(/\|/, $_ );
making $fields[3] as my basis for sorting it. I wanted it to separate into 2 output text files
OUTPUT TEXT FILE 1:
NAME|JOHN|TOKYO|JPN
AGE|32|M
INFO|SINGLE|PROFESSIONAL|IT
NAME|LUKE|TOKYO|JPN
AGE|27|M
INFO|SINGLE|PROFESSIONAL|IT
OUTPUT TEXT FILE 2
NAME|MARK|MANILA|PH
AGE|37|M
INFO|MARRIED|PROFESSIONAL|BPO
NAME|SAMANTHA|SYDNEY|AUS
AGE|37|F
INFO|MARRIED|PROFESSIONAL|OFFSHORE
Putting all that is from JPN to output text 1 & non-JPN country to output text file 2
here's the code that what trying to work out
use strict;
use warnings;
use Data::Dumper;
use Carp qw(croak);
my #fields;
my $tmp_var;
my $count;
;
my ($line, $i);
my $filename = 'data.txt';
open(my $input_fh, '<', $filename ) or croak "Can't open $filename: $!";
open(OUTPUTA, ">", 'JPN.txt') or die "wsl_reformat.pl: could not open $ARGV[0]";
open(OUTPUTB, ">", 'Non-JPN.txt') or die "wsl_reformat.pl: could not open $ARGV[0]";
my $fh;
while (<$input_fh>) {
chomp;
my #fields = split /\|/;
if ($fields[0] eq 'NAME') {
for ($i=1; $i < #fields; $i++) {
if ($fields[3] eq 'JPN') {
$fh = $_;
print OUTPUTA $fh;
}
else {
$fh = $_;
print OUTPUTB $fh;
}
}
}
}
close(OUTPUTA);
close(OUTPUTB)
Still has no luck on it :(
Here is the way I think ikegami was saying, but I've never tried this before (although it gave the correct results).
#!/usr/bin/perl
use strict;
use warnings;
open my $jpn_fh, ">", 'o33.txt' or die $!;
open my $other_fh, ">", 'o44.txt' or die $!;
my $fh;
while (<DATA>) {
if (/^NAME/) {
if (/JPN$/) {
$fh = $jpn_fh;
}
else {
$fh = $other_fh;
}
}
print $fh $_;
}
close $jpn_fh or die $!;
close $other_fh or die $!;
__DATA__
NAME|JOHN|TOKYO|JPN
AGE|32|M
INFO|SINGLE|PROFESSIONAL|IT
NAME|MARK|MANILA|PH
AGE|37|M
INFO|MARRIED|PROFESSIONAL|BPO
NAME|SAMANTHA|SYDNEY|AUS
AGE|37|F
INFO|MARRIED|PROFESSIONAL|OFFSHORE
NAME|LUKE|TOKYO|JPN
AGE|27|M
INFO|SINGLE|PROFESSIONAL|IT
You didn't say what you needed help with, so I'm assuming it's coming up with an algorithm. Here's a good one:
Open the file to read.
Open the file for the JPN entries.
Open the file for the non-JPN entries.
While not eof,
Read a line.
Parse the line.
If it's the first line of a record,
If the person's country is JPN,
Set current file handle to the file handle for JPN entries.
Else,
Set current file handle to the file handle for non-JPN entries.
Print the line to the current file handle.
my $jpn_qfn = '...';
my $other_qfn = '...';
open(my $jpn_fh, '>', $jpn_qfn)
or die("Can't create $jpn_qfn: $!\n");
open(my $other_fh, '>', $other_qfn)
or die("Can't create $other_qfn: $!\n");
my $fh;
while (<>) {
chomp;
my #fields = split /\|/;
if ($fields[0] eq 'NAME') {
$fh = $fields[3] eq 'JPN' ? $jpn_fh : $other_fh;
}
say $fh $_;
}
#!/usr/bin/env perl
use 5.012;
use autodie;
use strict;
use warnings;
# store per country output filehandles
my %output;
# since this is just an example, read from __DATA__ section
while (my $line = <DATA>) {
# split the fields
my #cells = split /[|]/, $line;
# if first field is NAME, this is a new record
if ($cells[0] eq 'NAME') {
# get the country code, strip trailing whitespace
(my $country = $cells[3]) =~ s/\s+\z//;
# if we haven't created and output file for this
# country, yet, do so
unless (defined $output{$country}) {
open my $fh, '>', "$country.out";
$output{$country} = $fh;
}
my $out = $output{$country};
# output this and the next two lines to
# country specific output file
print $out $line, scalar <DATA>, scalar <DATA>;
}
}
close $_ for values %output;
__DATA__
NAME|JOHN|TOKYO|JPN
AGE|32|M
INFO|SINGLE|PROFESSIONAL|IT
NAME|MARK|MANILA|PH
AGE|37|M
INFO|MARRIED|PROFESSIONAL|BPO
NAME|SAMANTHA|SYDNEY|AUS
AGE|37|F
INFO|MARRIED|PROFESSIONAL|OFFSHORE
NAME|LUKE|TOKYO|JPN
AGE|27|M
INFO|SINGLE|PROFESSIONAL|IT
Thanks for your Help heaps
I was able to solved this problem in perl,
many thanks
#!/usr/local/bin/perl
use strict;
use warnings;
use Data::Dumper;
use Carp qw(croak);
my #fields;
my $tmp_var;
my ($rec_type, $country);
my $filename = 'data.txt';
open (my $input_fh, '<', $filename ) or croak "Can't open $filename: $!";
open my $OUTPUTA, ">", 'o33.txt' or die $!;
open my $OUTPUTB, ">", 'o44.txt' or die $!;
my $Combline;
while (<$input_fh>) {
$_ = _trim($_);
#fields = split (/\|/, $_);
$rec_type = $fields[0];
$country = $fields[3];
if ($rec_type eq 'NAME') {
if ($country eq 'JPN') {
*Combline = $OUTPUTA;
}
else {
*Combline = $OUTPUTB;
}
}
print Combline;
}
close $OUTPUTA or die $!;
close $OUTPUTB or die $!;
sub _trim {
my $word = shift;
if ( $word ) {
$word =~ s/\s*\|/\|/g; #remove trailing spaces
$word =~ s/"//g; #remove double quotes
}
return $word;
}
I am taking a total number of line as a user input and then I am deleting those numbers of l ine from the file.
I saw this learn.perl.org/faq/perlfaq5.html#How-do-I-count-the-number-of-lines-in-a-file- and then I tired the below simple logic.
Logic:
Get the Total number of lines
Subtracts it by the numbers entered by user
print the lines
Here is my code :
#!/usr/bin/perl -w
use strict;
open IN, "<", "Delete_line.txt"
or die " Can not open the file $!";
open OUT, ">", "Update_delete_line.txt"
or die "Can not write in the file $!";
my ($total_line, $line, $number, $printed_line);
print"Enter the number of line to be delete\n";
$number = <STDIN>;
while ($line = <IN>) {
$total_line = $.; # Total number of line in the file
}
$printed_line = $total_line - $number;
while ($line = <IN>) {
print OUT $line unless $.== $printed_line;
}
Well, neither i am getting any error in code nor any out put ? why I just don't know.
Can any one give me some suggestion.
A Perl solution that's efficient for large files requires the use of File::ReadBackwards
use File::ReadBackwards qw( );
my $num_lines = 10;
my $qfn = 'file.txt';
my $pos = do {
my $fh = File::ReadBackwards->new($qfn)
or die $!;
$fh->readline() for 1..$num_lines;
$fh->tell()
};
truncate($qfn, $pos)
or die $!;
This does not read the whole file twice (unlike the OP's method).
This does not read the whole file (unlike the Tie::File solutions).
This does not read the whole file into memory.
Yet another way is to use Tie::File
#!/usr/bin/env perl
use strict;
use warnings;
use Tie::File;
tie my #lines, 'Tie::File', 'myfile' or die "$!\n";
$#lines -= 10;
untie #lines;
This has the advantage of not loading the file into memory while acting like it does.
Here a solution that passes through a stream and prints all but the last n lines where n is a command line argument:
#!/usr/bin/perl
my #cache;
my $n = shift #ARGV;
while(<>) {
push #cache, $_;
print shift #cache if #cache > $n;
}
or the one-liner version:
perl -ne'BEGIN{$n=shift#ARGV}push#c,$_;print shift#c if#c>$n' NUMBER
After finishing reading from IN, you have to reopen it or seek IN, 0, 0 to reset its position. You also have to set $. to zero again.
Also, the final condition should be changed to unless $. > $printed_line so you skip all the lines over the threshold.
The "more fun" answer: use Tie::File!
use strict;
use warnings;
use Tie::File;
tie my #file, 'Tie::File', 'filename' or die "$!";
$#file -= 10;
Just read the file in reverse and delete the first n lines: -
open my $filehandle, "<", "info.txt";
my #file = <$filehandle>;
splice(#file, -10);
print #file;
Note: This loads the entire file into memory.
You could just buffer the last 10 lines and then not print out the remaining 10.
use English qw<$INPLACE_EDIT>;
{ local #ARGV = $name_of_file_to_edit;
local $INPLACE_EDIT = '.bak';
my #buffer;
for ( 1..$num_lines_to_trim ) {
push #buffer, <>;
}
while ( <> ) {
print shift #buffer;
push #buffer, $_;
}
}
You could also do this with File::Slurp::edit_file_lines:
my #buffer;
my $limit_reached = 0;
edit_file_lines {
push #buffer, $_;
return ( $limit_reached ||= #buffer > $num_lines_to_trim ) ? shift #buffer
: ''
;
} $name_of_file;
my $num_lines = 10;
my $qfn = 'file.txt';
system('head', '-n', -$num_lines, '--', $qfn);
die "Error" if $?;
Easy with a C like for :
#!/usr/bin/perl -w
use strict;
open(my $in,"<","Delete_line.txt") or die "Can not open the file $!";
open(my $out,">","Update_delete_line.txt") or die"Can not write in the file $!";
print"Enter the number of lines to be delete\n";
my $number=<STDIN>;
my #file = <$in>;
for (my $i = 0; $i < $#file - $number + 1; $i++) {
print $out $file[$i];
}
close $in;
close $out;
#
# Reads a file trims the top and the bottom of by passed num of lines
# and return the string
# stolen from : http://stackoverflow.com/a/9330343/65706
# usage :
# my $StrCatFile = $objFileHandler->ReadFileReturnTrimmedStrAtTopBottom (
# $FileToCat , $NumOfRowsToRemoveAtTop , $NumOfRowsToRemoveAtBottom) ;
sub ReadFileReturnTrimmedStrAtTopBottom {
my $self = shift ;
my $file = shift ;
my $NumOfLinesToRemoveAtTop = shift ;
my $NumOfLinesToRemoveAtBottom = shift ;
my #cache ;
my $StrTmp = () ;
my $StrReturn = () ;
my $fh = () ;
open($fh, "<", "$file") or cluck ( "can't open file : $file for reading: $!" ) ;
my $counter = 0;
while (<$fh>) {
if ($. >= $NumOfLinesToRemoveAtTop + 1) {
$StrTmp .= $_ ;
}
}
close $fh;
my $sh = () ;
open( $sh, "<", \$StrTmp) or cluck( "can't open string : $StrTmp for reading: $!" ) ;
while(<$sh>) {
push ( #cache, $_ ) ;
$StrReturn .= shift #cache if #cache > $NumOfLinesToRemoveAtBottom;
}
close $sh ;
return $StrReturn ;
}
#eof ReadFileReturnTrimmedStrAtTopBottom
#